Team Dynamics Wheels and Offsets

[cantfind1]

Okay so this seems to be done to death but just need some opinions.

I am going to get some track wheels and tyres not concerned about swapping wheels front to back so sizes are as follows

Front 18x9j et30(extends by 20mm over OEM CSL Rims) or et35(extends by 15mm over OEM CSL rims) Not sure if the 20mm extension will foul the arch with 235 tyres?

Rear 18x9j et 15(extends by 6mm over OEM CSL Rims) running 265 tyres on the rear.

All team dynamics wheels pro race 1.2 not sure if I can get 1.3's in these sizes, not sure of the benefits of the 1.3's over the 1.2's, any ideas?

Any thoughts on this set up welcome!?:thumbs:

Have been using this website to calculate the offsets

http://www.1010tires.com/wheeloffsetcalculator.asp

Cheers

[shimmy]

Standard et44 front foul the Arches just with 15mm spacer which is the equivalent of et29. 9j but on 235 Tyres would push out the tyre another 3-6 mm thus making et 30 look a tight fit.

I'd be going for et35 front if you wanted decent road wear. This would give you the look of standard whith 12mm spacers fitted

on the rear et15 is perfect.

Just be a bit careful working out the offsets if you are using sane Tyres. For example 235/35 up front on 8 to 9j rims will have a similar width irrespective of the rim size as the tyre is still 235 wide. You def won't get an inch difference in width

my 18x9.5j fronts et37 arrive this week. Mine are running 265 all round so it will be very tight fit and I'll probably have to space out a little. Unless you can trial fit it is better to have bigger offset as at least you could add small spacers if there is a clearance option.

[cantfind1]

ok cheers Shimmy, looks like I will be going for the et35 at the front then and stick with the et15 for the rear.

You are running 265 all round holy sh!t that's wide for the front? What's the benefit?

I will be using these wheels to drive to and from the track so think 265 on the front on the road will be a nightmare!

[cantfind1]

BTW Shimmy who are your new wheels made by?;)

[shimmy]

My new fronts are Volks

I know it is gonna be a tight fit but ihave run et27 9.5j fronts at -3 cAmber so I am hoping """" that with the careful offset choice I Can run with -2 camber to get me there and back

265 all round should allow mr some extra front grip whilst also double tyre life : fronts wear edges and rears middle!

[karbonkid]

@cantfind1: Ive come to the conclusion of running TD 18x9J ET30 all round with a 10/15mm spacer on rear with 4x 265/35. This allows me to swap wheels/tyres, keeping spacers on the rear giving the equivalent of ET20/15.

[_Nathan_]

30 is too much for a 9 IMO, standard M3 rears are less than that (ET27 I think?) and work fine all round. I think et25 all round with a 10mm spacer on the rear should be fine for a road car?

[karbonkid]

30 is too much for a 9 IMO, standard M3 rears are less than that (ET27 I think?) and work fine all round. I think et25 all round with a 10mm spacer on the rear should be fine for a road car?

Nath what issues to do see running ET30? TMS run ET30 all round with no problem on their Cup Cars.

[_Nathan_]

I thought he said on anyother thread that they ran 20 all round?

We know that standard BMW rears all round work and they are ET27, I don't see the point in narrowing the track when I'm pretty sure the extra 2mm either side would be ok with a track camber anyway?

When I said too much I just meant that it is more than I think you need, not that there will be problems (no idea on inside clearance but I suspect it'd be fine as I don't recall the rear 18" m3 wheels being that close on the inside).

[karbonkid]

Your right he did quote that they run ET20 but he corrected himself when I descussed to him about offsets, as I would have thought ET20 would stick out the arch a lot. As the 18" Rear M3s are ET26 and when trial fitting I found they stuck out quite a bit, but work no problem as some do run rears all round. ET25 all round would work fine too and when adding a 10mm spacer to the rear would = to ET15, which is a good compromise too IMO.

[_Nathan_]

The front fitment depends on suspension, topmounts and camber so it is difficult to give advice based on anything other that my own setup.

As there is only 1mm difference between a solution that is known to work on multiple cars and et25 I'd certainly consider it but don't want to offer it as a full solution to your question and make you buy something that doesn't fit!

[karbonkid]

Totally. Will depend on set up, ride height and camber. IMO a 265 is pushing it on the front anyway, I hope to run camber up to -3 but want to keep it as close to the strut as possible to avoid issues with rubbing on arches. Do you have any pics of a ET25 up front?

[_Nathan_]

Nords has some pics of a 265 tyres on an ET26 OEM rear up front running road camber of circa 1.5 degrees I believe. You'll be able to find them somewhere on here :)

[shimmy]

Et27 rears do not work pm road geos, they hit the arches hence why I said et30

[_Nathan_]

Need Nords on here - he left his Intrax top mounts in the road position and didn't get rubbing?

[daniel]

buy my 4 x rears and you have solved your problem. et26 18x9 all around and only £220, but i'll do you deal as you sorted me out on the top mounts:thumbs:

[shimmy]

Need Nords on here - he left his Intrax top mounts in the road position and didn't get rubbing?

buy my 4 x rears and you have solved your problem. et26 18x9 all around and only £220, but i'll do you deal as you sorted me out on the top mounts:thumbs:


both of these using 9j NOT 9.5j.

9j will be a few mm better both sides

[_Nathan_]

We are talking about 9J wheels here though?

Team Dynamics don't make a 9.5...

[shimmy]

yes i know but 9.5J rear CSL rims rub on arches on road with -2 camber

9j rims with 265 tyres wont be much better so i would def go et30 rather than et25 on road biased car

[_Nathan_]

Gotcha!

[shimmy]

Don't think so skinny jim

I just think 9j Et25 on a road car is still too tight

not even sure what the 18 inch rear m3 OEM rims et is?

[cantfind1]

Wow opened up a can of worms!

Ok so we are all in agreement that thorney run TD18x9 et 30 all round with spacers on the rear to compensate.

By my calculations an et 30 on the front will give an extra 20mm extend outwards and extra 8mm space inner clearance?

agree et 15 for the rear is perfect, its just that i don t like spacers and will be running 245 up front and 265 in the rear so wheel swapping won t be possible for me. Which is fine by me.

Those who want to swap wheels front to back then it looks like et 30 all round is the option to go for, with a spacer on the rear say 15mm, however I am still not clear if this will fit the front with a 265 tyre on?

Any way have made my decision TD 18x9j et30 up front and 18x9j et15 in the rear. 245 tyres for the front and 265 for the rear. Any one talk me out of it?

Or John any prices on this setup?:thumbs:

[shimmy]

Those who want to swap wheels front to back then it looks like et 30 all round is the option to go for, with a spacer on the rear say 15mm, however I am still not clear if this will fit the front with a 265 tyre on?

Any way have made my decision TD 18x9j et30 up front and 18x9j et15 in the rear. 245 tyres for the front and 265 for the rear. Any one talk me out of it?


my 18 x 9.5j are in the uk now and will be trial fitted next Thursday at Simpsons wuith 265/35 tyres. I will trial them -2 and -3 camber so if you want to wait till then i can tell you if 265 all round will fit
bear in mind youll nearly double the life of the tyres being able to swap them fron to back, pays for my new rims in 2 sets of tyres:thumbs:

[cantfind1]

my 18 x 9.5j are in the uk now and will be trial fitted next Thursday at Simpsons wuith 265/35 tyres. I will trial them -2 and -3 camber so if you want to wait till then i can tell you if 265 all round will fit
bear in mind youll nearly double the life of the tyres being able to swap them fron to back, pays for my new rims in 2 sets of tyres:thumbs:

OK good point will defo be waiting as my car is at simpsons at the moment. Say hello to it for me!

[shimmy]

OK good point will defo be waiting as my car is at simpsons at the moment. Say hello to it for me!


ill put on the rims on it and take a picture for you :thumbs:

[cantfind1]

ill put on the rims on it and take a picture for you :thumbs:

sweet! Carbon black one with no roof screens or interior! and half a cage. :bigcry:

[_Nathan_]

Don't think so skinny jim

I just think 9j Et25 on a road car is still too tight

not even sure what the 18 inch rear m3 OEM rims et is?

I thought we'd established it was ET26?

[shimmy]

I thought we'd established it was ET26?


are you worreid your new wheels wont fit again :hahaha:



(coz im worried about mine - pick up MONDAY)

[_Nathan_]

Having seen the 18x10 et15 on the car I'm 99% sure that et25 will be fine :D

[karbonkid]

Wow opened up a can of worms!

Ok so we are all in agreement that thorney run TD18x9 et 30 all round with spacers on the rear to compensate.

By my calculations an et 30 on the front will give an extra 20mm extend outwards and extra 8mm space inner clearance?

agree et 15 for the rear is perfect, its just that i don t like spacers and will be running 245 up front and 265 in the rear so wheel swapping won t be possible for me. Which is fine by me.

Those who want to swap wheels front to back then it looks like et 30 all round is the option to go for, with a spacer on the rear say 15mm, however I am still not clear if this will fit the front with a 265 tyre on?

Any way have made my decision TD 18x9j et30 up front and 18x9j et15 in the rear. 245 tyres for the front and 265 for the rear. Any one talk me out of it?

Or John any prices on this setup?:thumbs:

I think you have chosen the best set up TBO (if you're not fussed with swopping fronts with rears) and running a 245 is a safe bet.

I also still have some doubts of the possibilities of running a 265 up front. But certain it will be fine.
So... I will listen out for the all clear from Shim too, so let us know. :thumbs:

[TANKSLAPPER]

Having seen the 18x10 et15 on the car I'm 99% sure that et25 will be fine :D


I just fitted some BBS ch's 18 x 10 et40 with a 20mm spacer ie et20 and it only just misses the front suspension strut by 3mm. :banghead:

[_Nathan_]

3mm is fine isn't it?

Sure I'll find out if I've made yet another expensive mistake soon enough, I'm only running 250 wide tyres too which might help?

Lots of people in the US running 18x10 et25 up front....

[DuncanR]

yes i know but 9.5J rear CSL rims rub on arches on road with -2 camber

9j rims with 265 tyres wont be much better so i would def go et30 rather than et25 on road biased car
And thats the way I am going, finally ... having watched all the options flying about on here, and not really having a scooby about whats best,:banghead: I have bitten the bullet and ordered 4 new TD 18 X 9 with ET30,I already have 10mm spacers:thumbs:. And if the 265 dont work on the front I will fookin make 'em work !! even if I have to put them on a Lathe and turn them down !:supz:.
Any additional speed, traction or road holding i might need will have to come from my bollocks ! ... so mote it be !:clown:

[DuncanR]

pays for my new rims in 2 sets of tyres:thumbs:

So buy 2 more sets of tyres ...and get another set of rims free Shim !:hahaha::thumbs:

[DuncanR]

I just fitted some BBS ch's 18 x 10 et40 with a 20mm spacer ie et20 and it only just misses the front suspension strut by 3mm. :banghead:

Dont do the Foxhole on a full stomach, and your wallet on board then mate !!:thumbs:

[DuncanR]

will be running 245 up front and 265 in the rear so wheel swapping won t be possible for me.

Which make 245 ? obviously not Cups

[cantfind1]

Which make 245 ? obviously not Cups

Am thinking about kumho's they have had good reviews the v70a. Am I right in thinking I need a 245/35R18 or a 245/40R18. Will be going for the hard compound, they do a medium as well.

For the rear it will be the same tyre with 265/35R18 in hard compound, thats the only size they do in a 265.

[daniel]

I struggled to find track tyres in 245/40. Not sure kumho make that size either.

[DuncanR]

I struggled to find track tyres in 245/40. Not sure kumho make that size either.

Toyo do the R888 and the R1R in that size, never run them so cant comment as to performance !

[cantfind1]

Yes you are right toyo do the 245/40, kumho don 't do the 245/40 only the 245/35.

Any one know which size is better for keeping wheel circumference right?

[karbonkid]

Come on shim im waiting!! :whistle:

[shimmy]

Come on shim im waiting!! :whistle:

:birdman:



OK good point will defo be waiting as my car is at simpsons at the moment. Say hello to it for me!

sweet! Carbon black one with no roof screens or interior! and half a cage. :bigcry:


it looked sad so i gave yours and Nathans a cuddle:thumbs:





I also still have some doubts of the possibilities of running a 265 up front. But certain it will be fine.
So... I will listen out for the all clear from Shim too, so let us know. :thumbs:

so i had a trial fit of the fronts at Simspsons last week. Just to refresh your memory i have new front rims 18 x 9.5J et37 (et15 rears) Volks running 265/35/18 Michelin Cups on Intrax Ik2 suspension

The goal is to run these on both -2 and -3 camber (road and track) without rubbing. The difficult bit will be to get the tyre and rim to sit between the arch and strut and not touch either on both settings when the adjustable camber plate is used.

We fitted the rims first on road settings -2 camber with 12mm spacers. It seemed like the tyre was far too close to the arch so we tried 5mm spacers. This fitted perfect with both looking ok but spacers were not hubcentric so it was thought that i may get wheel vibration. So then we tried NO SPACERS but the tyre was to close to the strut spring. Not touching but close. Simpsons suggested reducing the size of the follower spring on the Intrax therefore lifting the spring base up and making more room.

So after all that the et37 rims fit front without spacers. I dont think this would be acheivable without a/m suspension but with maybe 3-10mm spacers other compromises may be possible. I will try 3m spacers to give some more comfort room between strut spring and tyre i think. so running et34.

My gut feel on OEM suspension and a/m suspension is that et32 is about right on 9.5J fronts. et30 should be ok BUT et25 might be too tight unless you have OEM suspension in which case you might have more roomunder the arch

[karbonkid]

:birdman:

it looked sad so i gave yours and Nathans a cuddle:thumbs:


so i had a trial fit of the fronts at Simspsons last week. Just to refresh your memory i have new front rims 18 x 9.5J et37 (et15 rears) Volks running 265/35/18 Michelin Cups on Intrax Ik2 suspension

The goal is to run these on both -2 and -3 camber (road and track) without rubbing. The difficult bit will be to get the tyre and rim to sit between the arch and strut and not touch either on both settings when the adjustable camber plate is used.

We fitted the rims first on road settings -2 camber with 12mm spacers. It seemed like the tyre was far too close to the arch so we tried 5mm spacers. This fitted perfect with both looking ok but spacers were not hubcentric so it was thought that i may get wheel vibration. So then we tried NO SPACERS but the tyre was to close to the strut spring. Not touching but close. Simpsons suggested reducing the size of the follower spring on the Intrax therefore lifting the spring base up and making more room.

So after all that the et37 rims fit front without spacers. I dont think this would be acheivable without a/m suspension but with maybe 3-10mm spacers other compromises may be possible. I will try 3m spacers to give some more comfort room between strut spring and tyre i think. so running et34.

My gut feel on OEM suspension and a/m suspension is that et32 is about right on 9.5J fronts. et30 should be ok BUT et25 might be too tight unless you have OEM suspension in which case you might have more roomunder the arch

I thought you opted for ET32. Anyway glad things are working well with the correct spacers. Only way is trial and error in which will have all benefitted from you, so.... Thanks. :thumbs:

P.s Just about to go collect my 18/ 265 Cups. ;)

[shimmy]

whilst i was weighing the suspension i managed to check (nervously) the new rims and tyres

results ;)

VR G2 are 2kg per wheel lighter at the front and 2.4kg lighter at the rearm and this is with 9.5J at the front so a good resultm even better than i thought. This was measured with tyres on as well and 18 inch tyres are 0.5kg heavier than 19 inch

overall unsprung weight saving 8.8kg :smokin:

cost.............................never mind :whistle:

[_Nathan_]

lol, I did a cost per kg spreadsheet to work out what to do first ;)

PS. When you gave it a cuddle did you feel the weight of the doors :D

[DuncanR]

lol, I did a cost per kg spreadsheet to work out what to do first ;)

PS. When you gave it a cuddle did you feel the weight of the doors :D
Divorce my wife and get rid of at least 80 useless kilograms would have been top of my spreadsheet !:thumbs:

[_Nathan_]

pmsl, I suspect the cost per kg for a divorce would be quite high though!

[DuncanR]

pmsl, I suspect the cost per kg for a divorce would be quite high though!
It cost me approx. £3,272 per. kg actually mate !!:bigcry:

[shimmy]

[quote=_Nathan_;48695]pmsl, I suspect the cost per kg for a divorce would be quite high though![/quote
It cost me approx. £3,272 per. kg actually mate !!:bigcry:



For your sake I hope your ex was a skinny bird!

[DuncanR]

[quote=DuncanR;48714]
For your sake I hope your ex was a skinny bird!

She was 16 stone 4 lbs mate ! :bigcry:

[shane@mbtech]

[quote=shimmy;48718]

She was 16 stone 4 lbs mate ! :bigcry:

No wonder you divorced her:whistle:;)

[DuncanR]

[quote=DuncanR;48859]

No wonder you divorced her:whistle:;)

Cost me more as she was so big, they made me divorce her twice in 2 lots of 8 stone !! :hahaha:

[DazBlackCSL]

[quote=lawsy;48877]

Cost me more as she was so big, they made me divorce her twice in 2 lots of 8 stone !! :hahaha:

:hahaha::hahaha:

[Bounce]

[quote=lawsy;48877]

Cost me more as she was so big, they made me divorce her twice in 2 lots of 8 stone !! :hahaha::hahaha::hahaha::hahaha::thumbs: