This is a discussion on Tire Wear within the Wheels and Tires forums, part of the General Help category; bought a 99 Z28 recently, and it needs new tires. The car has a pretty bad vibration around 65mph, but ...
03-19-2006, 06:42 PM #1
bought a 99 Z28 recently, and it needs new tires. The car has a pretty bad vibration around 65mph, but below that and above that it's fine. The front tires have pretty bad cupping, what causes wear like that? I'd assume it's because of the front tires being so worn that I get the vibration, but what makes a tire wear that way?
The car only has 60k miles, never been wrecked, bought it off the original owner. It was a female too. So I doubt the car has been abused too much. Hell she knows more about cars than I do!
03-19-2006, 08:34 PM #2
Wheel alignment, wheel out of balance, for starts.
03-20-2006, 07:20 AM #3
So probably a new set of tires with the usual mounting/balancing will take care of it then. That's about what I expected.
03-20-2006, 04:55 PM #4
NOPE..... Gonna need new tires mounted and balanced... But at the very least youneed to get the front alignment checked also.. The cupping could be a bad shock also..
03-20-2006, 05:50 PM #5
- Join Date
- Feb 2006
- North Carolina
- 2001 Trans Am Conv
Definitely agree with the other posters. A wheel alignment is a must or you might ruin your NEW tires in no time at all.
03-20-2006, 06:31 PM #6
Well the car seems to drive straight, it just has that vibration and the cupping...
03-20-2006, 07:04 PM #7redls1birdGuestOriginally Posted by SailorZ28
03-20-2006, 07:18 PM #8
- Join Date
- Aug 1999
- San Diego, Ca
- 383 Procharged & N20 Vert
Wheel AlignmentBlack 1999 Blown Convertible A4
Forged 383, ATI D-1SC
NX MAF Kit | 222/226 .585 115
AS Stage II 6.0L FI Heads
Moser 9" | 3.70 | Wavetrac | 35 Spline | Vigilante 3600
548.0 RWHP - 563.8 RWTQ - 10# - D1
666.0 RWHP - 734.2 RWTQ - 125 Shot - P1
Black 2009 Escalade Hybrid 4WD
Black 2008 GMC Yukon Hybrid 4WD (Totaled)
Black 2013 Chevy Volt (Gone)
03-20-2006, 09:33 PM #9
Guess I'll have to get that done when I get tires then, hopefully in a few weeks.
03-20-2006, 10:46 PM #10adudeGuest
I'm shocked!! And you should be too, shocked that is. (as in you need new front shocks) 1999 you say, H'mm, I'll bet if you check them they will either be origionals or cheap leaking replacments. They only set you up to go downhill from there, tires, alignment, and so on. My suggestion is to check them first, and if you do need new ones do some research and get the best ones you can afford for the type of driving you will be doing the most of.
After you are satisfied you have no(or no more) shock issues, check the ball joints and alignment. With those issues out of the way your alignments and other front end parts will last much longer. With that, a good lube, and proper tire inflation you will probably be riding on Cloud Nine. On a 99 you might want to take a look at your suspention bushings, but with those miles, it's a toss up.
03-22-2006, 05:25 PM #11
Crap I hope I don't have to do that kind of work to the car! I bought it thinking it'd be a pretty good worry free daily driver. I don't want to have to buy new shocks and bushings and God knows what else!
When you guys say I need an alignment, should I get the 4 wheel or just the 2 wheel? Roughly how much does that cost? And if I buy the tires at Costco, since they seem cheapest, do they do alignments there?
The shocks...well I'll worry about that if the car is still shaking after an alignment and tires.
03-22-2006, 05:31 PM #12Originally Posted by redls1bird
really? yet toe doesn't cause a pull. i own an alignment/suspension shop. toe is the biggest killer of tires, yes. but doesn't create a pull.
cupping can be caused by a couple of things. improper alignment causing wear. improper balance, worn shocks are a few more.
03-22-2006, 05:33 PM #13Originally Posted by SailorZ28
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