I made a mistake in saying "higher tire temps". I meant higher tire
pressure. Not that I'm an expert but the bigger tires do help the brakes
not lock up as quick. Maybe you should loosen the suspension up to get back
the controllability.
Kirk
-----Original Message-----
From: James Creasy [mailto:black94pgt@pacbell.net]
Sent: Tuesday, January 09, 2001 9:52 AM
To: Kirk Meline; Autocross List
Subject: Re: 245 or 275 on front?
> I found that running 245's on a 9 inch wide wheel is
> great if you run very, very high tire temps.
ok, thats what i have 17x9 in front. but my concern is that the tires are
not getting warm *enough*.
on fun runs where i the tires got warm (and maybe a little softer) i would
drop 1 to 1.5 seconds a run. thats significant since i am often out of 1st
place by that much.
lack of braking is another problem so more tire in front is more braking
more than anything else. but i am a lousy judge of speed as i will drive
crappy, the car feels like crap, no traction, no cornering, no braking and i
am a few seconds off TTOD. i dont understand my car.
-james
----- Original Message -----
From: Kirk Meline <KMeline@iscribe.com>
> Hi James
>
> I think you answered your own question. You didn't list the width of the
> wheel though so its hard to tell. Go with the perfect fit rather than
> bigger or smaller. I found that running 245's on a 9 inch wide wheel is
> great if you run very, very high tire temps. But you have to monitor that
> after every run or you get in trouble quick. What about a 255\40or45
tire?
> That seems to be perfect on the Cobra R wheel.
>
>
> Kirk
>
>
>
>
> -----Original Message-----
> From: James Creasy [mailto:black94pgt@pacbell.net]
> Sent: Monday, January 08, 2001 10:12 PM
> To: Autocross List
> Subject: 245 or 275 on front?
>
>
> i am about to order new tires, and should i use a 275 front tire, or the
245
> width as i ran last year (17" rims). i can heat up the larger rear tires
at
> will (also my car has a rear weight bias), but i am concerned about not
> getting four 275 size tires hot on my 2100 lb car. already the tires dont
> heat up at our cold sites with just three runs. (look for me peeling out
> and over-driving like crazy on my first runs this season!)
>
> i know, i should use a softer tire than the kumho, but this way i can use
> them as regular street tires.
>
> thanks for your ridicule and hushed whispers in advance =)
>
> -james c
|