Need fitment help! 2016 s550

[fiveoboy01]

That’s crazy that you are able to get a 315 up front. I assume your ride height isn’t too low?

I am using BMR SP083 handling springs which are advertised as less drop. Supposedly .875” front and .75” rear, I never measured.

im also running 18” wheels, so the overall tire diameter may be slightly less, although again I didn’t measure.

I do run quite a bit of camber up front so the tires don’t end up hitting the fenders under compression but that’s desirable for handling/autocross anyways.

Appearance wise the car doesn’t sit low.

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[robvas]

I am using BMR SP083 handling springs which are advertised as less drop. Supposedly .875” front and .75” rear, I never measured.

im also running 18” wheels, so the overall tire diameter may be slightly less, although again I didn’t measure.

I do run quite a bit of camber up front so the tires don’t end up hitting the fenders under compression but that’s desirable for handling/autocross anyways.

Appearance wise the car doesn’t sit low.

That rear tire looks tiny

 

[fiveoboy01]

That rear tire looks tiny

I don't know what that means, but ok.

 

[NightmareMoon]

If you're trying to fit a 305 or larger on the front, you need camber plates and more negative camber or they'll poke. Probably more than 2.5 degrees. With 11" and 305s the formula is an effective ET of ~26. If those are an ET of 48 (I can't read it), then you can calculate the spacer you need. The slightly more narrow wheel helps a bit, but it all comes down to the specific tire, wheel, effective offset, and camber you have.

The camber plates will move the strut father inside and then you can squeeze a big tire between the strut and the fender. Without moving the strut, you just don't have the space.

Crash bolts won't help much, they don't move the strut and add space, they just tilt the wheel.

 

[robvas]

I don't know what that means, but ok.

It means it looks ridiculously small

 

[fiveoboy01]

It means it looks ridiculously small

Cool story? I don't see your point at all. Got one?

 

[robvas]

Cool story? I don't see your point at all. Got one?

You posted a tiny ass tire in a wheel/tire fitment thread. Looks bad/weird. Not the look people want. Lots of fender gap.

See it now?

 

[thegray5.0]

You posted a tiny ass tire in a wheel/tire fitment thread. Looks bad/weird. Not the look people want. Lots of fender gap.

See it now?

I think it's just a matter of function vs aesthetics. I just downsized from 20x10 285/35 square to 19x11 305/30 square and although my wheel wells aren't filled in like before, the handling of the car definitely improved. Not every car has to have perfect fitment, it's all going to be different depending on the purpose of the car.

 

[robvas]

I think it's just a matter of function vs aesthetics. I just downsized from 20x10 285/35 square to 19x11 305/30 square and although my wheel wells aren't filled in like before, the handling of the car definitely improved. Not every car has to have perfect fitment, it's all going to be different depending on the purpose of the car.

True, not everybody understands that what looks good might not ride or perform good. Or vice versa

 

[fiveoboy01]

True, not everybody understands that what looks good might not ride or perform good. Or vice versa

Maybe you should go back and READ the OP.

I picked up a set of used 18x10.5 HRE wheels with Nitto NT01 305/35/18 from a 2013 GT500. The issue is I can fit the 18” HRE’s on the rear just fine, however the front is a whole other issue. I have to run a 1” spacer to fit them and not hit the coilovers. Unfortunately, that then makes the wheel poke on the front beyond the fender about an inch.

My help and pics are obviously relevant.

I’m building a car for Autocross and possibly track use. Aesthetics take a back seat to function, clearly not everyone understands that… 18" is a very common size for track use.

The car looks great on these wheels, you’re the only person to try and say otherwise, it’s not being assembled for your opinion anyways.

His question was about tire clearance which I answered in a picture with a tire size and then he asked if the car sits low, so I proceeded to provide another picture. Try to follow along.

I’m aware that the car doesn’t sit that low… fender gap takes a back seat to the right tire fitting and not rubbing the strut, hitting parts of the car, rubbing on brake lines, etc. Fitment goals are going to move around depending on use. Wheel size can also be dictated by what is available for tires.

 

[robvas]

My last post was agreeing with why you did what you did for your purposes. Your panties were in a bunch so maybe you didn't get that. Some people get obsessed with the look but forget about rubbing etc and performance

If it didn't look noticeably off, I wouldn't have said anything. It might make him want to reconsider the tire size if he doesn't have the same goals as you. You said you don't care about fender gap, he might.

Sorry for commenting in a discussion.

 

[robvas]

I think it's just a matter of function vs aesthetics. I just downsized from 20x10 285/35 square to 19x11 305/30 square and although my wheel wells aren't filled in like before, the handling of the car definitely improved. Not every car has to have perfect fitment, it's all going to be different depending on the purpose of the car.

True, but 305/30 on a 19" is a more normal size and fill the gaps better. 305/30 on an 18" like the OP has is only 25.2" tall, which is a very short tire for these cars.

Part of the OP's issue is buying a set of used wheels/tires and then not being the ideal offset or tire size, trying to make them work, spending more on wheel studs or spacers, etc.

Better off getting the right stuff in the first place.

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