18x8 +40, will it work??

I've found some BBS wheels I'd really like. They are 18x8, but they are 40 offset. I plan to run 235/40/18 tires. Everything pretty much says I need to be in the 43-48 offset range. Anyone have any experience to know if 40 will rub on the fenders? This is on an 08 Spec B, stock ride height (for now).

My brother put 17"x7.5" with 235 wide dunlop star specs on his spec b, he's got swift springs and he had to roll his fenders. The wheels have a 38mm offset, I'm guessing that you will have to roll your fenders.

I'm running 18x8 +43, 235's... The front you might get away with depending on your camber, the rears you will have to roll for sure.

Thanks for answering guys. That's a bummer, I've been looking and can never find anything I like that fits, and ran across the BBS RS-GT, and REALLY like them, and there is a pretty good deal on them right now. But, they are +40. Back to the drawing board

 

http://www.bbs-usa.com/wheel_images/wheelPic_8-28-2006_1078.jpg

Rolling your fenders is really not that big of a deal. If it's done right, you wont get any chipping of the paint and the cars appearance is not going to change.

Check my math here guys. People are running 18x8.5 +48 with 235/40/18 successfully, right? Maybe even +45? Without rolling?

 

Well, 8.5 inches is 215.9mm. Half of that is 107.95. Take out the 48mm offset, and that leaves 59.95mm on the outside of the wheel, right?

 

The 8 inches is 203.20mm. Half of that is 101.6, take out the 40mm offset, and that leaves 61.6mm on the outside.

 

So, that would say this combo I want is only 1.5mm further out than a known working combo, right? It would actually be tucked in about 1.5mm more than 18x8.5 +45 that, according to xenonk's thread, works.

 

In other words, this wheel I want in 18x8 +40 is actually going to be between an 18x8.5 +45 and +48 as far as how much it sticks out.

 

Am I calculating something wrong here?

I think you mean 235!!! and yes many people run that size. Also, your math looks correct and would require a fender roll.

 

Check my math here guys. People are running 18x8.5 +48 with 325/40/18 successfully, right? Maybe even +45? Without rolling?

 

Well, 8.5 inches is 215.9mm. Half of that is 107.95. Take out the 48mm offset, and that leaves 59.95mm on the outside of the wheel, right?

 

The 8 inches is 203.20mm. Half of that is 101.6, take out the 40mm offset, and that leaves 61.6mm on the outside.

 

So, that would say this combo I want is only 1.5mm further out than a known working combo, right? It would actually be tucked in about 1.5mm more than 18x8.5 +45 that, according to xenonk's thread, works.

 

In other words, this wheel I want in 18x8 +40 is actually going to be between an 18x8.5 +45 and +48 as far as how much it sticks out.

 

Am I calculating something wrong here?

Sorry, dylexic fingers I guess. Well, if my math is right, why would it require a fender roll? Apparently 18x8.5 +48 doesn't. And, according to xenonk's thread, neither does 18x8.5 +45.

with your stock ride hieght, you should be fine. once you drop it or get coilovers you will more than likely need a roll. im on BC coils, 235/40/18 18x8 +48 and i need to roll mine front and rear

i am running 235/40/18 dunlop direzza star specs with 18x8.5 +48. the star specs run wide, i did some rolling on the rears it wasnt a big deal. not dropped very far i had some very minor rubbing.

it'll work.

This will give you all the numbers you need

 

http://www.rimsntires.com/rt_specs.jsp

Just roll them...RGRs are super awesome

Just roll them...RGRs are super awesome

Technically, they are RS-GT's

i'd rock those any time any day!

Scobby Fan, that site is awesome! It made me realize my calculations are flawed. While the wheel is narrower, the tire is not, thus with 40mm offset, it will stick out slightly more than the others.

 

But, I'm really tempted to give it a try.

either run 225s or just roll your fenders its no big deal. especially if your not lowered yet.

stock suspension = no worries

Or you can get some adjustable lateral links and camber the rear a bit as well.

Just throwing my thoughts. I have an 05 LGT dropped an inch or so.

2 months ago I put on anthracite BBS CH's 18x8 +35, w/tires that are standard 225/40/18.

I did a basic rear fender roll, and plenty of room in rear.

The fronts, I have not rolled, however have rubbed a tad bit around a fast dipping corner.

Good luck

Just throwing my thoughts. I have an 05 LGT dropped an inch or so. 2 months ago I put on anthracite BBS CH's

 

you have about 2 minutes to post pics or else...

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

I won't see them before I go to bed

Hey sorry, just read your post now while on my droid. I'll post tomorrow. Cool!?

Wheels and tires on order, I'll let you guys know how it turns out.

%5Bimg%5Dhttp%3A//i214.photobucket.com/albums/cc58/cxcrum/73da103d.jpg[/img]

%5Bimg%5Dhttp%3A//i214.photobucket.com/albums/cc58/cxcrum/ac9177fd.jpg[/img]