18x10.5 +50.2
 

I have seen a set of 18x10.5 +50.2 for sale and may jump on it, but before I do...
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Has anyone ever tried fitting these in the rear? Would this require a roll and/or pull? I have heard some people say you need different trailing arms and some says you don't. I'm guessing this will depend on tire size. Approximately what tire sizes would fit to not change the trailing arms?

Thanks!

Little back story. I know this fitment usually would not fit the front but I have shineauto feed rep front fenders (+25mm) to be installed so front fitment will not be a problem especially if I get spacers. Ohlins are also to be installed if that makes a difference in fitting the rears. Oh and front wilwood Track-day kit from sakebomb garage to be fitted.

You shouldn't need either a roll or pull. 18x10 +50 with 285/30/18 is a super common rear fitment, and I run them with a 5mm spacer with stock fenders. Those will only stick out a millimeter further or so.

P

Yup- 18x10 +52 is the old 20+ year old standby fitment for racing a stock fender FD.
Fits a 285/30-18 with maxed front camber and stock fender lips or regular camber and fender lips rolled under.

18x10.5 +50 will fit great with 285/30-18 or 295/30-18. You may or may not want to run spacers to flush it out on your set-up- really depends on how much negative camber you run with.

Wow thanks for the great responses guys. Are you guys saying that stock camber (I just want to stick to the oem camber) with around 285 or 295 will not even need a roll? And since it's a well known fitment im guessing no one had any problems with the trailing arms.

Nope- it requires max front camber to fit a narrow 285/30-18 (tires vary from their nominal sizing in actual width) with the 18x10 +52 fitment which is around (-2.4 to -2.6) deg depending on ride height.

Each degree less of camber changes the clearance at the tire treadblock 5.54mm out toward the fender.
Stock front camber is 0 so -2.4 deg camber (fits 285 tire) x5.54mm each degree camber = 13.3mm and to take 13.3mm off the outside of the tire it also has to come off the inside because the tire centers itself on the wheel width. Therefore 285mm wide tire at -2.4 degrees fits the same as a 255mm wide tire at 0 degrees negative camber.

With 0 degrees negative camber in front you can fit a 255/35-18 with a +50mm offset wheel and stock unrolled front fenders.

In the rear you can fit a narrow 285/30-18 on 50mm offset with stock -1.2to-1.5 deg camber and stock unrolled fenders on an 18" wheel.

If you do a 17" wheel you have to have more positive offset/narrower tire/wheel or it will rub the trailing arm (trailing arm is slightly diagonal from inboard car to outboard at lower control arm).

Oh I totally understand that the front needs camber for stock fender, but like I said above I'll be putting in a wide front fender so it should fit without any camber. My real concern was only the rear fitment which you just answered. Thank you!