Wheel Offset
#1
Instructor
Thread Starter
Wheel Offset
A while back I posted that I was having issues with tracking/wandering in my Z06. Got a good alignment and posted back that it was fixed. The drive home was on good highway at normal highway speeds. Well, now I've had a chance to get out and play a little on the not so good roads around home at some "higher speeds." While tracking/wandering is not nearly as bad as it was before alignment, it still gets pretty bad a higher speeds. Let's just say 80 or above, car becomes quite unpredictable, especially passing someone where I have to cross the crown of the center line. The car has aftermarket wheels that were on it when I bought it. Prior owner upped the sizes to 18/19 from stock 17/18, but the offsets are quite different now. Can changing offset relationships affect handling???? Stock front is 17x9.5 with 54 offset, now I have 18X9.5 with 53 offset. Not a big change in front. Rear: stock 18X10.5 with 58 offset, now I have 19X11 with 73 offset. Quite a change in rear. So front offset decreased 1 mm, rear offset (per wheel) increased by 15 mm. Does anyone believe this could affect handling? If so, could a spacer be used in the rear to get the centerline of the wheel closer to where GM intended it to be?
Or is all this not relevant and I need to look for something else? By the way, I know it needs new tires, plenty of tread but tires are 7 years old by date code, and that may be the problem, but if I have the wrong wheels on the car, I don't want to buy tires if I am going to have to get different wheels. Everything in the suspension has either been replaced or confirmed within specs.
Thanks in advance!
Or is all this not relevant and I need to look for something else? By the way, I know it needs new tires, plenty of tread but tires are 7 years old by date code, and that may be the problem, but if I have the wrong wheels on the car, I don't want to buy tires if I am going to have to get different wheels. Everything in the suspension has either been replaced or confirmed within specs.
Thanks in advance!
#2
Le Mans Master
The offset is not relevant. Your problem lies elsewhere.
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STALION (04-15-2019)