My tires are ruined
Sorry for 4 posts in one topic, but I keep thinking of more to say. 
The front wheels/tires for the front are 8 inches wide. The rears are 7 inches wide. The front wheels are a lot more angled than the rear wheels. The rears on most cars are almost straight up and down, and the fronts have a bit of visible negative camber.
Although I'm not a tire or alignment person by any means, using the factory/proper/stock alignment for a GXP with 7's on the front and 8's on the rear would likely cause the front wheels to be a little over angled and the rears to be a little under angled because of the difference in widths of the wheels.
I would say that is what happened. The reason the rear ones don't show any excessive wear is because they have been running basically straight up and down, while the fronts have been running at too much of an angle.
I think that's right...
The front wheels/tires for the front are 8 inches wide. The rears are 7 inches wide. The front wheels are a lot more angled than the rear wheels. The rears on most cars are almost straight up and down, and the fronts have a bit of visible negative camber.
Although I'm not a tire or alignment person by any means, using the factory/proper/stock alignment for a GXP with 7's on the front and 8's on the rear would likely cause the front wheels to be a little over angled and the rears to be a little under angled because of the difference in widths of the wheels.
I would say that is what happened. The reason the rear ones don't show any excessive wear is because they have been running basically straight up and down, while the fronts have been running at too much of an angle.
I think that's right...
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Thanks for the welcomes
The alignment was done with the tires/rims in the correct position. Then the tires were rotated.
Sorry for 4 posts in one topic, but I keep thinking of more to say.
The front wheels/tires for the front are 8 inches wide. The rears are 7 inches wide. The front wheels are a lot more angled than the rear wheels. The rears on most cars are almost straight up and down, and the fronts have a bit of visible negative camber.
Although I'm not a tire or alignment person by any means, using the factory/proper/stock alignment for a GXP with 7's on the front and 8's on the rear would likely cause the front wheels to be a little over angled and the rears to be a little under angled because of the difference in widths of the wheels.
I would say that is what happened. The reason the rear ones don't show any excessive wear is because they have been running basically straight up and down, while the fronts have been running at too much of an angle.
I think that's right...
The front wheels/tires for the front are 8 inches wide. The rears are 7 inches wide. The front wheels are a lot more angled than the rear wheels. The rears on most cars are almost straight up and down, and the fronts have a bit of visible negative camber.
Although I'm not a tire or alignment person by any means, using the factory/proper/stock alignment for a GXP with 7's on the front and 8's on the rear would likely cause the front wheels to be a little over angled and the rears to be a little under angled because of the difference in widths of the wheels.
I would say that is what happened. The reason the rear ones don't show any excessive wear is because they have been running basically straight up and down, while the fronts have been running at too much of an angle.
I think that's right...
The alignment was done with the tires/rims in the correct position. Then the tires were rotated.
Launching!
Joined: Jul 2009
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To sum it all up, if both front tires are wore the same way, even if they are different sizes, I would take a stab that your alignment is not correct. Either that, or you have some wore out front end parts. Either way, it has to be pretty serious to wear them out in 7000 miles.
Launching!
Joined: Mar 2010
Posts: 265
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From: Morristown, IN
So you have a GXP...
1. The rear tires sit like an A from the factory, not an H. This causes wear on the insides of the tires. It can be dealt with from camber bolts from the local parts store, or in my case, a trusted friend who owns a tire shop fixed them on his own.
2. The tires you have are not directional. You can rotate them. I almost bought those tires for that reason.
3. You have a GXP. The fronts are wider than the rears. However, the rear tires will not fit on the front. From reading above it appears as though the fronts will fit on the rears, never tried.
4. As a general rule, it's best just not to rotate these tires, unless you have all the information in front of you and know exactly what you're doing.
5. Another general rule. Don't trust that anyone knows what these cars are. Everyone assumes grand prix = V6, not V8 and sport tuned suspension. These cars require extra care and a knowledge of automobiles in general. You must assume that even the simplest maintenance tasks must be researched.
As odd as it sounds, fill in the blanks posted above. From there we can help you figure out what's going on. Most all of us have had experience with these issues.
There are a lot of very good people on this site who have helped a lot of people in situations like yours. Just make sure to get all the information they ask and 9 times out of 10, your issue will be solved.
1. The rear tires sit like an A from the factory, not an H. This causes wear on the insides of the tires. It can be dealt with from camber bolts from the local parts store, or in my case, a trusted friend who owns a tire shop fixed them on his own.
2. The tires you have are not directional. You can rotate them. I almost bought those tires for that reason.
3. You have a GXP. The fronts are wider than the rears. However, the rear tires will not fit on the front. From reading above it appears as though the fronts will fit on the rears, never tried.
4. As a general rule, it's best just not to rotate these tires, unless you have all the information in front of you and know exactly what you're doing.
5. Another general rule. Don't trust that anyone knows what these cars are. Everyone assumes grand prix = V6, not V8 and sport tuned suspension. These cars require extra care and a knowledge of automobiles in general. You must assume that even the simplest maintenance tasks must be researched.
As odd as it sounds, fill in the blanks posted above. From there we can help you figure out what's going on. Most all of us have had experience with these issues.
There are a lot of very good people on this site who have helped a lot of people in situations like yours. Just make sure to get all the information they ask and 9 times out of 10, your issue will be solved.
So you have a GXP...
1. The rear tires sit like an A from the factory, not an H. This causes wear on the insides of the tires. It can be dealt with from camber bolts from the local parts store, or in my case, a trusted friend who owns a tire shop fixed them on his own.
1. The rear tires sit like an A from the factory, not an H. This causes wear on the insides of the tires. It can be dealt with from camber bolts from the local parts store, or in my case, a trusted friend who owns a tire shop fixed them on his own.
3. You have a GXP. The fronts are wider than the rears. However, the rear tires will not fit on the front. From reading above it appears as though the fronts will fit on the rears, never tried.
The pictures I posted is of a GXP owner who has 18x8s on all fours. No rubbing. Nice ride.
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[QUOTE=GXP25;14010257]Quoted for truth.
Rears tires will not fit on the front wheel, correct. But all the wheels can be rotated around without issue (7 inches in the front, 8 inches in the rear, but not mismatched like the OP - silly).
Well I go and talk to the shop today as we are trying to get this straightened out and it appears that also way way back when I originally had the tires mounted and balanced they put a front tire on a rear rim and a rear tire on a front rim.
So the rims are in their correct location but the tires are not.
Rears tires will not fit on the front wheel, correct. But all the wheels can be rotated around without issue (7 inches in the front, 8 inches in the rear, but not mismatched like the OP - silly).
Well I go and talk to the shop today as we are trying to get this straightened out and it appears that also way way back when I originally had the tires mounted and balanced they put a front tire on a rear rim and a rear tire on a front rim.
So the rims are in their correct location but the tires are not.
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From: Rochester, NY
It's best to just follow the owner's manual, like I do. No tire rotations. I check air pressure once a month, have the tires rebalanced every 6,000 miles, and then have an alignment done annually. If you don't romp your car constantly, they can last for a while.
I'm simply quelling the notion that the front 18x8s wheels will rub when bolted to the rear.
Now his wrong tire on wrong wheel issue is something serious that needs to be addressed.
