2cold

Ok, so I put 20 inch rims on my G. The outside tread has worn more quickly than the rest of the tread (specifically on the front tires). The dealer said it was due to my tire being wider than stock. 245/35/20 is my tire size.

My question is, what size r20 tire should I get to help with the premature wear on my tread? Or is this just part of the territory with an aftermarket type size?

I have a G37S, came with 19s from factory.

stealthee

The tire being wider is not the cause. Poor alignment will cause your issue, specifically camber.

slartibartfast

iTrader: (7)

blnewt

iTrader: (13)

What width are your 20s? Do you have a drop or are you still at factory height?

2cold

How much did the adjustable upper arm controls set you back?

Stock height, wheels 8.5" wide

blnewt

iTrader: (13)

Shouldn't need adjustable front arms if you don't plan to drop. 245s on 8.5" width wheels is just fine, maybe tire pressures weren't correct or you were really tearing it up on the streets
Be sure to get an alignment done if you've done anything that would change your alignment like jacking your wheel on a pothole, curbing, etc or if you aren't the original owner. Never hurts just to get it done to make sure all is well under there

slartibartfast

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G37ethh

iTrader: (1)

Camber doesnt cause wear. Toe does.

blnewt

iTrader: (13)

Camber will cause wear, just not as quickly and severe as toe being off.

stealthee

Camber indeed causes wear.

https://www.google.com/search?q=camb...nt=firefox-b-1

G37ethh

iTrader: (1)

I can randomly pull info off the net too. Over the course of years, 1.5 is hardly noticeable. Its toe. Even a little bit and you're losing rubber fast. The tire has a sidewall, it can adjust to a bit of camber and keep pretty even pressure. Even a little toe and it's like dragging your tire a full revolution with each 10 it makes. Since it's the fronts I would look at the ball joints, or control arm/other bushings being out of spec. Could even be old sagging springs or bad struts.


Facts

stealthee

There are hundreds of links you can click on in that one link alone. It is not just random info. Camber does cause wear. I've seen it first hand on my own car.

And you FACTS edit completely disproves you.

blnewt

iTrader: (13)

-1.5 is just about in spec, it's the heavier camber that will cause quicker wear over time, BMWs are set to at least -1.5 or higher from the factory. And I think we can all agree that toe will cause drastic tire wear in a shorter time frame when out of adjustment.

G37ethh

iTrader: (1)

Let's see your alignment report showing castor and toe in spec and all that camber wear. I've been driving lowered cars for 20 years. Camber wear, if everything else is good, will barely be noticeable.

yes.

slartibartfast

iTrader: (7)