Hi all. I'm not here much. Just read a lot. I need help figuring tire sizes for 2 sets of rims. I have a spa yellow s2k with afi turbo kit. 375whp at 10lbs. Also have full asm full body kit with 25mm front fenders and over fenders.
First set is work equips 18x8.5 +41 and 18x9.5 +41. These will be the set I run all the time. We'll it's my daily driver.
Second set is work vs xx. 18x9.5 +21 and 18x11 +26. These will be for show. What size tires should I run. I want to be flush without rubbing. Thanks.

 

235/40/18 front 275/35/18 rear on the first...and I dont do show/herrafrush specs

 

The second set is tough because I don't know that the widebody really gives you that much more space as those are wide and low offset. I know I have seen a 285 on the 11 inch wide wheel and it has a bit of stretch but is still a decent size tire. A 265 would be pretty stretched on the 11 but would probably give you the most space. These are just guesses on my part you are going to have to put the wheels on and measure some to really see how much space you have to work with. You will likely need different alignment specs for the different sets of wheels.

 

Your second set wont fit on your 25mm widebody. Its not enough.

Fitment aside, the optimum performing tire widths for those spec wheels would be 245-255 Front and 285-295 Rear.

 

It's 25mm front and 30mm rears more than stock

 

Compared to your existing wheel, this new wheel will have an inner rim which is 6.3mm further away from the suspension strut. The outer rim will poke out 69.8mm more than before.



The strut shown in the diagram is for show only. Don't worry if the wheel looks like it fouls!


So if you look at this the 18x11 sticks out about 70mm more than stock. I put in the tire specs as 295's but the tire size won't really change how much the wheel will stick out. If it is stretched some you will have a bit more clearance. So basically you need to measure and see if you have 70mm between where the oem wheel sits and where your wider fenders are.

http://www.willtheyfit.com/index.php...et2=25#content

 

Currently I have 225/40 in front and 255/35 on the second set of rims and they rub.

 

What camber are you running?

 

-3 front and -3 rears