> 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.
----- 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
> That seems to be perfect on the Cobra R wheel.
> -----Original Message-----
> From: James Creasy [mailto:firstname.lastname@example.org]
> 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
> width as i ran last year (17" rims). i can heat up the larger rear tires
> 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