thoughts about track rims and tyres

[shimmy]

so although i am a collector of Michelin Cups i have been wondering what to do this winter to adjust and improve tyre and rim choice for next years trackdays to optimize cost, grip and flexibility

my DECISIONS so far;

1. Stick to Michelin Cup tyres, not R888 or slicks for various reasons
2. same size rims all round, not sure on size though

Choices still to make

3. What diameter size rim (18 or 19 inch)
4. Rim offsets and spacers needed
5. What width rims (9, 9.5 or 10 inch)
6. Michelin Cup tyre sizes 235, 245 or 265

So i need you guys to have a think and tell me what to do.

Interestingly from the http://www.michelinman.com/tires/ult...specifications website you can find out the tyre circumference diameter and width for each tyre on each rim size.

For instance 235/35/19 standard front Cups on 8.5 inch CSL rims have section width of 9.49 inches

Or standard 265/35/19 standard rear Cups on 9.5 inch CSL rims have a section width of 10.70 inches

So if i was to put rear rims and tyres on the front i would have to cope with an extra 1.21 inches of tyre width

BUT for instance of i was to run 265/35/18 on 18 inch rims the wodth would go up to 10.9 inches i guess from the extra height of side wall

any thought you old pipe smoking nerds