TCCoA Forums banner

1 - 5 of 5 Posts

·
Registered
Joined
·
41 Posts
Discussion Starter #1
Years ago I put the wrong wheels on my 94 V8. I put 255/40/17's on a 17x7.5" wheel with +51 offset. For years I've loved the tire size but hated how far into the car the wheels sank due to the offset. It's time to fix it.

I've picked VCT Bossini 18x8" wheels with +40 offset, matched with 255/35/18" tires. I like the overall width and height of the tire and am most concerned about the stance of the car and wheel with the new offset. If I did the calculations correct on willtheyfit.com, the 18x8.5" wheel will poke out .5" (11.7mm) more than stock. The new wheel/tire combo will poke out .64" (16.4mm) than my current incorrect 17's. I explored the site a bit and like the pictures of the cars with 18x8" wheels with +35.

Three questions:
1) Will an offset of +35 provide a better overall look and stance? We're talking a very small difference (1/4" or so) but I want to get it right. Bossinis aren't made with 5x108 +35 so I'd look for a different wheel.
2) I like the look of the lip of the Bossini and the offset is calculated based on the centerline of the wheel. The lip won't affect the mounting depth, correct?
3) Your overall opinion or thoughts?
 

·
Registered
Joined
·
1,916 Posts
Years ago I put the wrong wheels on my 94 V8. I put 255/40/17's on a 17x7.5" wheel with +51 offset. For years I've loved the tire size but hated how far into the car the wheels sank due to the offset. It's time to fix it.

I've picked VCT Bossini 18x8" wheels with +40 offset, matched with 255/35/18" tires. I like the overall width and height of the tire and am most concerned about the stance of the car and wheel with the new offset. If I did the calculations correct on willtheyfit.com, the 18x8.5" wheel will poke out .5" (11.7mm) more than stock. The new wheel/tire combo will poke out .64" (16.4mm) than my current incorrect 17's. I explored the site a bit and like the pictures of the cars with 18x8" wheels with +35.

Three questions:
1) Will an offset of +35 provide a better overall look and stance? We're talking a very small difference (1/4" or so) but I want to get it right. Bossinis aren't made with 5x108 +35 so I'd look for a different wheel.
2) I like the look of the lip of the Bossini and the offset is calculated based on the centerline of the wheel. The lip won't affect the mounting depth, correct?
3) Your overall opinion or thoughts?
+35 offset on an 18x8 will be fine, I am not running 18x8 but I am running 18x9" wheels with a 5x108 bolt pattern and they do have a +35 offset. They fit perfectly. No rubbing, no problems. Didn't have to roll the fenders or anything. According to this calc, they will have the same overall fit, just 1" less width. Personally I don't know if I would trust a +40 offset on the 18x8, just because you're getting VERY close to the wheel well. Normal driving would be fine, especially at stock ride height, but if lowered, you might need to roll the fender lips to prevent rubbing on bumps.

I am running 255/40/18 tires, and LOVE them. Little shorter than stock, 26" OD vs 26.6, but if you were to run a 245/45/18 they would be the same OD as a stock 225/60/16 and give you an accurate speedo without having to change gears or use a speedcal. The 255/35 you are looking at are a 25" tall tire, it will be VERY short and dramatically affect your speedo.
 

Attachments

·
Registered
Joined
·
1,916 Posts
1 - 5 of 5 Posts
Top