Thanks for all the feedback guys.
I didn't have time to check the thread before running off to the tire place during my lunch break.
One rim was slightly off (they didn't, however, say it needed to be replaced)
but they felt the tire on one of the wheels had two slightly raised portions.
The guy was honest enough to say he wasn't sure.
He did think it might be a good idea to get a new tire (he said that is what he would do).
That, along with the fact that I had already been considering getting a 2nd new one (to keep the tread per eaxle as even as possible - the oldest ones had 13,000 miles on them) was enough to make me get one additional new tire.
- one new tire
- they also changed the balance on one wheel [the one that was replaced last week (they didn't charge me for the balance; they also did the rotation for free last week which was nice).
- they checked balance on the two old ones
They were going to put the new ones on the rear, but I asked for them to be put up front since the handling and road feel is mostly through the front wheels since they are connected to the steering.
Besides, the two older tires had a surprising amount of tread left.
One has 13,000 miles; one has 7,000 miles on it.
My AWD system car is a 38 (font)/62(rear) torque split.
I will have to test the car on the highway at high speeds tonight and tomorrow during the commute to and from work.
I said if I wanted to go all out I could get all four new ones (e.g. in case of other defects).
He said "I wouldn't do that". See how it goes with the two new ones.
At least he was NOT trying to sell me anything I didn't need (alignment, four tires instead of two, new rims).
I saw them tell someone else she needed an alignment; and the manager told me that another gentleman who owns a BMW (low profile wheels M3 or M5) had to have all 4 rims replaced when it turned out that potholes had warped all four.
Regarding two comments above:
- My tires are not unidirectional (they are Continental Conti Touring Contact).
- You mentioned you got only 22K miles.
Remember your tire wire depends largely on the model of the tires (some last much longer than others) and also on diriving style (hard conrners, hard acceleration, hard stops and road surfaces.
I'll check the treadwear numbers later
With the amount of driving I do for work, I'll need new tires relatively
soon (1 year or so) anyway.
Surprisingly even the oldest of the four tires (13,000 miles) has a lot of tread (more than 70% I would say; will measure it later).
I think when I measured them in the middle, after getting the one new one last week, the remaining tread was as follows:
New one: 5/16 "
One with 7,000 miles: 4.2/16"
Oldest two: a little over 3/16 ".
So now it should be
front axle: TWO with 5/16 (both brand new)
rear axels: one with 3/16 and one with 4/16 " The difference seems less.
I'll do some measurements this evening.
I am hoping I don't need any new rims...
I tend to doubt it, since it was very good right before the rotation and haven't hit anything or done anything unusual since then.
If worst comes to worst, I'll get it balanced elsewhere in case their balancing machine is off (I noticed they were trying to get the right adapter to get the wheel to fit right, but they did seem to haev found it.
I saw the balance readout was 0 (emaning no issues).
At least now the front steering much less loose even at low speed, so that is a plus.
But the handling is something I can only test at high speed, since that is when the issues became most apparent.