I just picked up a new set of wheels and I'm a little unsure of what size tire is going to fit. I read through the FD wheel guide and originally came up with the following specs.

I currently have these wheels
Wheels
F 18x8.5 ET37
R 18x9.5 ET 38

Tires
F 255/35/18
R 275/35/18

After a few posts on the RX7 Facebook group i'm now doubting these specs.

My new assumption is
F 235/40/18
R 265/35/18

Will these updated specs work without rolling fenders?

Will I have to roll fenders with my wheel spec?

What tire size should I be running?

Thanks in advance.

 

 

Should be fine. Your tire sizing is slightly taller than factory but well within acceptable range. I have almost the exact setup on order and do expect a need to roll my fenders even after mild lowering on coilovers.

F 18x8.5 ET38 - 225/40-18
R 18x9.5 ET 38 - 255/35-18