Hello everyone,

I am fairly new to this forum but any help would be appreciated. I have a 2011 37S sedan that I lowered with H&R springs and put 20" wheels on. Although it looks nice it is burning through rear tires like I've never seen before. It has about 7200 miles on it and has already worn through 2 sets of rear tires.. the stocks and the aftermarket falken 452s! I do drive semi aggresive but I haven't tracked it or anything like that.

I'm assuming it has to do with the alignment the camber is fairly severe.. Has anyone else experienced this extreme tire wear? And is there a solution. A service manager at a dealership mentioned new upper control arms, but honestly if that's the case I may just go back to stock springs.

I have owned many lowered cars before this one and have never seen anything this bad with tires only lasting 3-4k miles..

Thanks!

 

If I'm not mistaking, the H&R springs have a substantial drop to them. I believe you need a rear camber kit to get the alignment correct. The people that aligned your car should have said that they couldn't get the alignment correct with the oem adjustments. There are a few companies that make them, and they're really not that expensive.

I'd try getting the aftermarket rear camber kit first before you throw your oem springs on again.

Good luck!

 

"I'm assuming it has to do with the alignment the camber is fairly severe"

This is for certain but did you ever have the alignment adjusted after lowering?
If you've worn out 2 sets in 7200 miles it seems to me you may not have done an alignment, at all, after you lowered it.
New adjustable camber arms and toe bolts are possibly what you need.

 

Yes it was aligned after the drop, at least I told it was and charged for one..

 

Before you do anything else, you need to get your G on a laser alignment rack. Sounds like you added the lowering springs and didn't do a four-wheel alignment afterwards. Ask for an alignment sheet that lists what the OEM specs are and how your settings compare. The alignment tech can tell you how much factory adjustment you have left to work with. Only then can you begin to intelligently decide what mods you'll need to stop running tires off the car.

 

They charged you for an alignment and didn't tell you your way off spec? I wouldn't take my car there anymore dude. You don't have to go back to a stock set up, although researching your mod would of saved you a lot of money. You need a rear camber kit, with the new toe bolts. That should get you back into spec. Eibach and Tanabe springs don't require a camber kit but the few people i know that have had H&R all were running kits. Spc makes a great product, would definitely recommend them. I was at a -3.5 before alignment and it corrected it to -1.6
And I'm at 25 5/8 in the rear. The opening for the rear toe bolts need to be opened up a bit, any competent shop can do this. Buy them asap get them installed, get an alignment and your good to go. Your front looks to be ok, but make sure the specs are right.

 

I still needed front and rear camber kits to minimize tire wear ... even with Eibach springs.

 

Toe has to be close to spec, if not out of spec toe that will eat through tires like nobody's business.

 

Your wear has nothing to do with the camber, you are most likely experience tire wear from the excess toe-in of the rear wheels.

When you drop the rear suspension on the G two things happen, you get negative camber (which is perfectly fine most of the time) and your toe goes inwards, meaning the rear tires aren't point straight put inwards, front to back.

Well they actually point a little inwards from the factory (during acceleration they straighten out), but with a drop this dramatically increases.

Get your rear toe in spec and your tire wear will be solved.

I've run -2.5 degrees of negative camber on my G without any significant inner tire camber wear for more than 10k miles.

 

Yep, those H&Rs require at the bare minimum, the toe bolt kit, this also requires elongating the slot that the toe bolt goes in. Get that alignment in spec and you'll really be loving that drop

 

Agreed, toe eats tires a lot more than camber ever will.

Ran through a set of tires down to the belts in 5000 miles without having my toe adjusted after a drop. Had the toe adjusted, 15K miles on next set of tires with minimal wear.

 

If you get the H&R springs, i would highly recommend getting the camber kit.

 

Thanks for the info guys!! The car is actually currently at the shop so I will have them address the toe issue.

 

You need to ask them for the alignment results so you can see what is out of spec....odd they wouldn't tell you.

The drop and +2 pr +3 on the wheel diameter will also create some issues.

So we know. What/where is wearing? Is is just the inside? Is is the entire tread? What is the wear rating on those tires?

 

I'm dropping my car on Eibach PK this weekend. I just want to make sure I'm not going to have to much of a tire wear issue? Should I think about getting a camber kit?