[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Tire wear, all-seasons, and stuff
On Sat, 20 Feb 1999, Michael Williams wrote:
> Interesting, in my experience, it has been the exact opposite. There is
> a web page i have used somewhat as a guide:
Thanks, I'll check it out. Just keep in mind that AWD cars handle
and behave differently than FWD and RWD cars. They have attributes of
> And in it, stated as the first method to reduce understeer, is to
> increase the tire pressure in front and reduce tire pressure in the rear.
> This was backed up by Ned Ritchie when he was my driving instructor
> because my car was understeering a bit, and he asked what tire pressures
> i run, which i run 42 front and 36 rear, he said ok, and that the front
> should be bumped up to 44 while leaving the rear the same...
I think it depends on how the car is set up. If you already have
super stiff springs and shock in the rear I suspect this would be true.
But for Stock springs I think Overly high in back is better.
> This is also interesting since, at least with the sport 8000, higher tire
> pressure most definitely means more grip. I had a slow leak on the right
> front tire on the 4k a while ago, and any time that it would get down a
> couple psi, it would lock up very prematurely on hard braking...until i
> filled it back up and evened out the pressure...
Unless you go TO high. Much above 44psi on a Z rated tire and it
will get round and you will lose traction. See my post from a a couple
> and also, anytime that i had the front tire pressures a bit lower, it
> rolled alot more and understeered much more heavily...
Try running the fronts at optimal 42 or 44 or whatever it is for
YOUR car (I suspect a TAD more on a UR-Q since it is heavier and has more
weight on the front with AC and a turbo than my 4kq. THen inflate the
rears Above the optimal pressure. (if you go over the "recomended max
pressure" or the tire I hold no responibility for the consequences
etc..etc...) but I run over the max 44 mark at about 46 or so when I hit
the track. I do 50 when Auto-Crossing since temp isn't an issue but I
dont know if I trust 50 on the track due to the high heat the tires reach.