Spacers & Tire Size assistance

[schaff70]

So I'm finally ready to order spacers for this set of wheels I picked up last month. It was just too good of a deal to pass up.

The wheels are 17x8 & are marked ET42 and measured to be 5x114 bolt pattern. It currently has 225/50/17 tires on it, but 2 of them have uneven wear & are going to be replaced.

I'm probably going to roll the front fenders since Geoff went ahead & bought the tool from Eastwood and maybe roll the backs too unless they prove to be too much trouble.

So basically I need to know what size spacers to buy and what size tire you recommend for the front. The car is already pretty low. A slight stretch is fine with me, but I'm not looking to 'stance' the car. I do want the wheels pushed out a little more though, especially the rears.

These are going on my 84 245 btw.

[towerymt]

Get 225/45/17.

25+ front, 32 rear will work. Rear lips need to be trimmed or rolled above the mudflap, and you may want to center the axle if you haven't already. Chris' GT ran 18x8 ET10 rear with 225/40/18 and didn't rub once the lips were trimmed. 8" ET10 looks good on the rear and doesn't stick out so far that tires have to be stretched to fit.

Up front, I'd want to run closer to ET20. 25mm adapters will be good.

You don't need to roll the front. Rob's 242 has 8" ET3 on the front and he needed to roll, but ET17 should be fine even if you put the 225/50s up front. Front fenders can be hard to roll just because they're somewhat flimsy, but it does work eventually. There's lots of room under the front fenders. I bet you could run 245/40/17 at ~ET12-15 and not have any issues.

[schaff70]

Bump for new wheels.
Sold these to my buddy Owen for his 300Z



I also traded the M3 Vaders for a set of 17x8.5 BMW wheels w. 2 good tires. Everything I've found about them online has them with an ET+13.

Will these fit, if so, what should the specs be on adapters? I'm looking at running 225 40 17 tires.

[towerymt]

Thin. you'll be at negative offset on an 8.5". those are gonna poke out plenty. if you want a decent fitting wheel/tire and not have to mess with rubbing on the fender lip, then I'd look for something having higher offset. I'd want about 10-15mm offset on an 8.5" on the rear of a 240. You're there...but with a 15-20mm adapter, you're going to be in the fender lip.

last weekend I had 7.5" ET38 on the rear with 32mm adapters. 245/45/16. I had rubbing on the lip on one side, and it's pretty much hammered flat. That's a big tire though, wider/taller than 225/40/17.

However, your 8.5" ET13 wheels would stick out an additional ~6mm compared to mine, BEFORE adapters. If I bumped mine out another 6mm, then added a 15-20mm adapter, they simply wouldn't fit well. Unless it was some ridiculous 205/40/16 and the lip is trimmed/hammered flat and I don't mind the fender lip being above the tire where it may rub on big bumps.

mine was rubbing on EVERY compression bump I hit to/from NJ this weekend. tiny tiny rub, just a squeak, so it was OK to autocross it, wasn't going to hurt the tire.

If I had a wagon that might haul weight or tow something once in a while, I'd want a rear tire that would fit even if I put an engine and tools in the back. I don't know if you can accomplish that with an 8.5" ET(-7)

try supporting the axle with a jack stand so the hub is at normal height, then put the wheel/tire in there so it's hitting against the wheel studs and see how close it is to the lip when you lower the body down over it.