I posted this in the race car tech section, but after thinking about it, this may fit better here. Any input is appreciated.

https://www.rx7club.com/race-car-tech-103/best-ax-track-wheel-tire-setup-fd-400953/

 

What class are you running in? Are you competing or just doing for yourself for fun?

Rishie

 

Running in SM2 provided you have enough HP you'll want as big of a tire width as you can fit (based off of what the top FD drivers in the class are running). They are running 17" rims with tires around 255/40 front and 275/40 rear at a minimum. I'm still running on 245/40 A032Rs but I'll probably be going up to 255/275 or more when I run these tires out (I have another set of rims now).

In these sizes you'll have to look at what tire you want to run in a R compound and then select your rim/tire size. Once you start getting > 255/40 it gets a bit sparse. 275/40 has a pretty good selection, after that you have to head up to "Corvette/Viper" size around 315/35 before you get a decent vendor mix again.

 

If you are running in a stock class, you will be required to keep stock size wheels. The stock FD wheels are actually pretty good. Very light. For stock, I would recommend a 245/45/16 size tire.

 

This is just for fun. No hardcore competition or anything. I'm not 100% sure what class I will be in. I think it's safe to say that I am not eligible for a stock class considering my coilover suspension, brakes, and engine upgrades after this weekend, I should be tuned to around 360-375 whp so I will probably need atleast 255/40's. I already break traction in 2nd with 265 Kumho MX's in the back when the turbo spools.

 

Run atleast a 285/30/18 in front or go bigger like Andy runs. Andy says he will be running a 315 on front this year. He's the BOMB!!

If you run 275's you will not get enough traction anywhere!!

Spank

 

I think I am going to go with a set of Kumho Victoracers V700 245/45/16 on the stock wheels. I heard that they will be coming out with this size in the V710 soon, but my tire guy just said he hadn't heard anything about it.