Body shake
#1
AutoX
Thread Starter
Join Date: Dec 2002
Location: NJ
Posts: 11
Likes: 0
Received 0 Likes
on
0 Posts
Body shake
hi folks - a new member to be board. need to discuss a disturbing find. Have a 2001 S with 13100 miles - recently noticed that at higher speeds (75 and up) the entire car shutters (through the steering wheel as well as through the seats). At first I thought it was because the top was up, but then that wasn't the case. Thought it was tire pressure, and the pressure is at 29 front 36 back (Pirelli P-Zeros).
Have aero kit - was not a problem 5000 miles ago. Anyone else have same problem? <img src="confused.gif" border="0">
Have aero kit - was not a problem 5000 miles ago. Anyone else have same problem? <img src="confused.gif" border="0">
#3
Instructor
Join Date: May 2002
Location: Toronto, Canada
Posts: 233
Likes: 0
Received 0 Likes
on
0 Posts
Also check for feathering on your front tires - inner edge. This is a type of cupping that may not seem obvious to you. The mileage you have is about right for this to manifest - I had a similar problem. The aggressive alignment of these cars can sometimes be the cause.
Solution: new set of tires (sorry)
Solution: new set of tires (sorry)
#4
I've had the same problem on my 986S with 18" Sport Designs. Diagnosis: bent rim. It is unfortunately common to have a bent rim, especially if you're running low profile tires. <img src="graemlins/crying.gif" border="0" alt="[crying]" />
#5
What you should do is take your car to a tire shop that has a Hunter 9700 machine. See <a href="http://www.hunter.com" target="_blank">www.hunter.com</a> and do a search for a dealer in your area. My local Goodyear tire store has one and it correctly identified both a slipped belt on my original Pirellis causing vibration at 75mph (could be you have the same problem) as well as their machine identified an out-of-round brand new Bridgestone S-03 tire from TireRack.com.
I highly recommend checking out your wheels and tires on a Hunter 9700 as it will identify out of round wheels, out of round tires, etc.
I suspect you'll need some new tires, but without getting checked on a Hunter 9700, it is hard to say.
I highly recommend checking out your wheels and tires on a Hunter 9700 as it will identify out of round wheels, out of round tires, etc.
I suspect you'll need some new tires, but without getting checked on a Hunter 9700, it is hard to say.
#6
Instructor
Second on the Hunter 9700. Don't waste your time at a shop without this equipment. Find one on the locator give the shop a call and get the front wheels (and maybe rear as wel) looked at and that will get you one step closer to the answer.