Tires Rubbing. Idea's??
Thread Starter
Burning Brakes
Joined: Mar 2009
Posts: 1,211
Likes: 2
From: Albany Oregon
Tires Rubbing. Idea's??
I bought a set of used HRE's. The wheels are 547 18x8.5” front with a +46 offset and a 19x10” rear with a +60 offset. I have them on my 2008 Coupe with the factory Goodyears, non-Z51. The car now has about 4500 miles and today we noticed that they were frequently rubbing going through the mountain. Mostly on the passenger side and more in the rear than the front. The driver was heavier than the passenger.
They tend to rub worst in a left hand corner with a bump, sometimes not much of a bump or pushing it. Othertimes they do not rub on much harder bumps.
Any idea's? These wheels were sold for a pre-2008 c6 convertible. Could these not be compatible with my car?
They tend to rub worst in a left hand corner with a bump, sometimes not much of a bump or pushing it. Othertimes they do not rub on much harder bumps.
Any idea's? These wheels were sold for a pre-2008 c6 convertible. Could these not be compatible with my car?
Drifting
Joined: Nov 2005
Posts: 1,745
Likes: 35
From: Turlock CA
I bought a set of used HRE's. The wheels are 547 18x8.5” front with a +46 offset and a 19x10” rear with a +60 offset. I have them on my 2008 Coupe with the factory Goodyears, non-Z51. The car now has about 4500 miles and today we noticed that they were frequently rubbing going through the mountain. Mostly on the passenger side and more in the rear than the front. The driver was heavier than the passenger.
They tend to rub worst in a left hand corner with a bump, sometimes not much of a bump or pushing it. Othertimes they do not rub on much harder bumps.
Any idea's? These wheels were sold for a pre-2008 c6 convertible. Could these not be compatible with my car?
They tend to rub worst in a left hand corner with a bump, sometimes not much of a bump or pushing it. Othertimes they do not rub on much harder bumps.
Any idea's? These wheels were sold for a pre-2008 c6 convertible. Could these not be compatible with my car?
--Dan
Melting Slicks
Joined: May 2004
Posts: 3,017
Likes: 2
The problem is the offset in the rear. The OEM wheels have a +79 which means that your wheels stick out 19 mm more or 3/4". While that's not a lot it maybe enough that your tires hit the fenders in some corners or bumps if it's been lowered. You can cure it cheaply by raising your car slightly (1/4 - 1/2") on the OEM bolts. Or ... you can buy different wheels.
--Dan
--Dan
Several CF members have cracked rear fenders with improper offset wheels.
Thread Starter
Burning Brakes
Joined: Mar 2009
Posts: 1,211
Likes: 2
From: Albany Oregon
The problem is the offset in the rear. The OEM wheels have a +79 which means that your wheels stick out 19 mm more or 3/4". While that's not a lot it maybe enough that your tires hit the fenders in some corners or bumps if it's been lowered. You can cure it cheaply by raising your car slightly (1/4 - 1/2") on the OEM bolts. Or ... you can buy different wheels.
--Dan
--Dan
Drifting
Joined: Nov 2005
Posts: 1,745
Likes: 35
From: Turlock CA
Thanks. I was hoping I might be able to do something like that. It's stock height and rubbing in the front too. I wouldn't have bought them, if I had seen them on the car first, but now I like having unique wheels, so I guess I'll have to check into lifting it up a little.
Raising (or lowering) the car is easy using the bolts in the leaf spring that contact the lower a-arms. They have a 10 mm hex head. Measure your height at all four corners before you start. I just go off the fender lip on the wheel centerline as a reference point. It seems common to be around 26.5-27.5" in front and an inch more in the rear from the factory. But, you may need more with your wheels.
Jack the car to relieve the pressure on the spring and turn the top of the bolt (sticking up through the spring) clockwise (looking down at it) to raise the car. Give it two full turns, set the car down, move it around (or drive it) and remeasure. Repeat as needed. There are several DIY threads online with pictures.
--Dan
