# School me on tire vs rim fitmet
**URL:** https://forums.speedlife.net/t/school-me-on-tire-vs-rim-fitmet/50585
**Category:** NYSpeed Automotive
**Created:** [June 25, 2008, 11:13am UTC](https://forums.speedlife.net/t/school-me-on-tire-vs-rim-fitmet/50585 "2008-06-25T11:13:08Z")
**Posts on this page:** 20
**Page:** 1
### Author:  [@Schema](https://forums.speedlife.net/u/Schema)
#### Post date: [June 25, 2008, 11:13am UTC](https://forums.speedlife.net/t/school-me-on-tire-vs-rim-fitmet/50585/1 "2008-06-25T11:13:08Z")
Admittedly, I know squat about tire/rim fitment, but I have run in to an issue.
-I bought new rims for the car, they’re 18x8.5(outside) and 7.5(inside)
- Proper tires for these guys are 215/40
This set up will fin nicely under the wheel wells without needing to roll the fenders. BUT, it’s damn near touching the springs on the inside of the rim and tire.
Having never run in to this issue, I’d imagine I need some kind of spacers to change the offset. I’ve found 15,25,and 30mm spacers to be the most common.
If I add say, the 25 in the front, and 30 in the back, I will need to roll the fender and or get flares/some kind of widebody. I can roll the fenders but do not want to allocate $ for widebody stuff.
Can I get away with a skinnier tire? If so, can anyone do the math on the spacer used vs tire sizes? I don’t want the “stretched VDUB” look, but if I can get away with using a tire thats 7.5" at the least, and able to fit with the spacer, i’d like to do so.
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### Author:  [@cky89](https://forums.speedlife.net/u/cky89)
#### Post date: [June 25, 2008, 11:17am UTC](https://forums.speedlife.net/t/school-me-on-tire-vs-rim-fitmet/50585/2 "2008-06-25T11:17:07Z")
If they’re hitting your spring, it sounds like your offset is not right for your application.
Also, as far as I know, 215’s are too skinny for that rim? (I could be wrong) but my stock rims are 8 wide, and they came with a 225 on it from the factory.
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### Author:  [@RuBiCaNT](https://forums.speedlife.net/u/RuBiCaNT)
#### Post date: [June 25, 2008, 12:11pm UTC](https://forums.speedlife.net/t/school-me-on-tire-vs-rim-fitmet/50585/3 "2008-06-25T12:11:13Z")
:word:
What’s the stock offset?
8.5" wide rim with a 215 is in Mega-Lip you see on some Vdubs. I would say AT LEAST a 235/40 or 235/35 or 245/35
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### Author:  [@newman](https://forums.speedlife.net/u/newman)
#### Post date: [June 25, 2008, 12:16pm UTC](https://forums.speedlife.net/t/school-me-on-tire-vs-rim-fitmet/50585/4 "2008-06-25T12:16:36Z")
if it’s “damn near touching” why would you add 1"(+) spacers???
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### Author:  [@Schema](https://forums.speedlife.net/u/Schema)
#### Post date: [June 25, 2008, 12:20pm UTC](https://forums.speedlife.net/t/school-me-on-tire-vs-rim-fitmet/50585/5 "2008-06-25T12:20:44Z")
> [@newman](#):
>
> if it’s “damn near touching” why would you add 1"(+) spacers???
No clue. I honestly haven’t gone through tire rim fitment before on anything non-stock. I’m looking to be educated.
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### Author:  [@Schema](https://forums.speedlife.net/u/Schema)
#### Post date: [June 25, 2008, 12:22pm UTC](https://forums.speedlife.net/t/school-me-on-tire-vs-rim-fitmet/50585/6 "2008-06-25T12:22:59Z")
> [@cky89](#):
>
> If they’re hitting your spring, it sounds like your offset is not right for your application.
> Also, as far as I know, 215’s are too skinny for that rim? (I could be wrong) but my stock rims are 8 wide, and they came with a 225 on it from the factory.
Using tirerack, thats the tire they recommended on an 18in wheel. I really don’t know what the offsets are, the rim is an ADR M-Sport, 4x114.3. The car is a 1990 240sx.
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### Author:  [@newman](https://forums.speedlife.net/u/newman)
#### Post date: [June 25, 2008, 12:23pm UTC](https://forums.speedlife.net/t/school-me-on-tire-vs-rim-fitmet/50585/7 "2008-06-25T12:23:49Z")
ugh.
you definitely need to be schooled. Do some research on the 240 boards…
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### Author:  [@cky89](https://forums.speedlife.net/u/cky89)
#### Post date: [June 25, 2008, 12:24pm UTC](https://forums.speedlife.net/t/school-me-on-tire-vs-rim-fitmet/50585/8 "2008-06-25T12:24:17Z")
If your barely hitting you need 5-10mm spacers for safe distance. 1 inch is MASSIVE.
Bing sells spacers for 240’s, they’re 60 for a set shipped.
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### Author:  [@cky89](https://forums.speedlife.net/u/cky89)
#### Post date: [June 25, 2008, 12:26pm UTC](https://forums.speedlife.net/t/school-me-on-tire-vs-rim-fitmet/50585/9 "2008-06-25T12:26:00Z")
Also your coilovers may need to be adjusted (if you have coilovers) you may need to run some extra negative camber, which will cause uneven tread wear. it’s not the right way to go about doing it, but I know a ton of 240 guys still do it anyways.
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### Author:  [@Mr\_T](https://forums.speedlife.net/u/Mr_T)
#### Post date: [June 25, 2008, 12:26pm UTC](https://forums.speedlife.net/t/school-me-on-tire-vs-rim-fitmet/50585/10 "2008-06-25T12:26:31Z")
yea 215’s are too narrow for an 8.5 in rim unless your a vdub kid who likes to strech your tires lol. Im running 215’s on a 7 inch wide rim right now. But there usually on 7.5’s. You should be running a 225 or higher.
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### Author:  [@Blue\_Eyed\_Devil](https://forums.speedlife.net/u/Blue_Eyed_Devil)
#### Post date: [June 25, 2008, 12:31pm UTC](https://forums.speedlife.net/t/school-me-on-tire-vs-rim-fitmet/50585/11 "2008-06-25T12:31:12Z")
You can barely fit a piece of paper between my tires and suspension.
:gotme: No worries here.
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### Author:  [@sureshot007](https://forums.speedlife.net/u/sureshot007)
#### Post date: [June 25, 2008, 12:38pm UTC](https://forums.speedlife.net/t/school-me-on-tire-vs-rim-fitmet/50585/12 "2008-06-25T12:38:19Z")
> [@cky89](#):
>
> extra negative camber, which will cause uneven tread wear
Camber does not cause tread wear. Toe does.
And I also agree, 215s are way to skinny for those wheels. I have 17x8s with 245s on them, and they look just right.
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### Author:  [@theblue](https://forums.speedlife.net/u/theblue)
#### Post date: [June 25, 2008, 12:41pm UTC](https://forums.speedlife.net/t/school-me-on-tire-vs-rim-fitmet/50585/13 "2008-06-25T12:41:12Z")
to put this in perspective… a stock evo comes with an 8" wide rim and a factory tire that is 235 wide. most evo owners upgrade to 255 on that wheel. 215 will fit, but is not correct.
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### Author:  [@Blue\_Eyed\_Devil](https://forums.speedlife.net/u/Blue_Eyed_Devil)
#### Post date: [June 25, 2008, 12:45pm UTC](https://forums.speedlife.net/t/school-me-on-tire-vs-rim-fitmet/50585/14 "2008-06-25T12:45:02Z")
> [@sureshot007](#):
>
> Camber does not cause tread wear.
Wat?
Why do you say camber does not?
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### Author:  [@newman](https://forums.speedlife.net/u/newman)
#### Post date: [June 25, 2008, 12:45pm UTC](https://forums.speedlife.net/t/school-me-on-tire-vs-rim-fitmet/50585/15 "2008-06-25T12:45:54Z")
camber definitely killed my STi tires.
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### Author:  [@Blue\_Eyed\_Devil](https://forums.speedlife.net/u/Blue_Eyed_Devil)
#### Post date: [June 25, 2008, 12:48pm UTC](https://forums.speedlife.net/t/school-me-on-tire-vs-rim-fitmet/50585/16 "2008-06-25T12:48:02Z")
I have fucking popped tires from neg. camber.:biglaugh:
They had a nice chamfer on them.:biglaugh:
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### Author:  [@sureshot007](https://forums.speedlife.net/u/sureshot007)
#### Post date: [June 25, 2008, 12:49pm UTC](https://forums.speedlife.net/t/school-me-on-tire-vs-rim-fitmet/50585/17 "2008-06-25T12:49:14Z")
I ran -3.2 degrees on the front of my wrx, and it wore a little unevenly, but not excessively. It’s the toe being non-zero that causes them to wear excessively and pop with full tread on the outside.
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### Author:  [@Geoff](https://forums.speedlife.net/u/Geoff)
#### Post date: [June 25, 2008, 12:52pm UTC](https://forums.speedlife.net/t/school-me-on-tire-vs-rim-fitmet/50585/18 "2008-06-25T12:52:08Z")
The discrepency here is uneven vs. excessive. Of course neg. camber will cause the insides of the tires to wear quicker (uneven in comparison to the rest of the tire), but toe will really cause it to wear excessively as you’re dragging as well.
It’s just how you word it.
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### Author:  [@theblue](https://forums.speedlife.net/u/theblue)
#### Post date: [June 25, 2008, 12:52pm UTC](https://forums.speedlife.net/t/school-me-on-tire-vs-rim-fitmet/50585/19 "2008-06-25T12:52:46Z")
it’s all relative… a car with a lot negative camber that’s driven mostly is a straight line will eat tires. a car with no neg camber driven at a track day will eat tires (a lot more than if you had neg camber)…
it’s all about picking the right camber for your needs.
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### Author:  [@Blue\_Eyed\_Devil](https://forums.speedlife.net/u/Blue_Eyed_Devil)
#### Post date: [June 25, 2008, 12:53pm UTC](https://forums.speedlife.net/t/school-me-on-tire-vs-rim-fitmet/50585/20 "2008-06-25T12:53:30Z")
And it (toe) will slow you down.🙂
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