Re: Re(2): Suspension/Handling Problems

[healey@lerc.nasa.gov (jim healey)]

>
>----- Begin Included Message -----
>

>I didn't see too much activity on this one, so I thought I'd add a few 
>comments.  First and foremost ... if you are doing a lot of driving at or 
>above 75 mph I hope that you are using VR or better rated tires.  HRs are 
>rated for operation to 85, but I'd be concerned running them at 75+ for 
>extended periods.
>
>Things to look for when front end shudders at high speed:
>1) Tire balance - A slight imbalance can be a big problem @ 90.  Look for 
>   signs of unusual tire wear.
>2) Check alignment & steering components for wear.  You say that you have 
>   new struts/shocks.  Have a 4-wheel alignment done and have the steering 
>   checked for worn parts (tie-rod ends, bushings, etc).

snip snip

>Steve Buchholz

Howdy, just a little clarification, an H rated tire has a maximium speed 
capacity of 130 mph.  While lots of other factors enter for safe speeds
(temp, loading of the car), I don't think running 75-85 for a few hours 
constitutes any real danger.  Considering a basic passenger car tire
is probably an S (rated 112 mph) and is expected to run all day at 55 mph
I would say we could extrapolate 75 without any worry for an H.

jim h
>
>