Chris's new build of an MX5 based car

[Talonmotorsport]

Originally Posted by Johno

Hope this is not the case as I believe the 13" wheels give the best handling for a 7 type car.
I know most ppl go for the 15" option as the tyre choice is more popular...

I don't think wheel and tyre size has any thing to do with tyre choice with most builds as you need 15" rims on Sierra builds to clear the bolt heads on the lower mounts of the fabricated uprights. You can use 14" or even 13" rims if you get creative with the mounting plates and brake sizes but then it makes every thing more complicated.