 KUMHO TIRES, Racers will find this interesting |
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| KenH |
 Jul 10 2004, 02:48 PM
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#1
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Senior Member  Group: Members Posts: 680 Joined: 16-January 03 From: Gilroy, CA Member No.: 156  |
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| Randal |
Jul 10 2004, 03:44 PM
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#2
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Advanced Member Group: Members Posts: 4,446 Joined: 29-May 03 From: Los Altos, CA Member No.: 750 |
Thanks Ken. Great stuff.
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| Van914 |
Jul 10 2004, 04:23 PM
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#3
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Van914 Group: Members Posts: 698 Joined: 5-January 03 From: Cincinnati, Ohio Member No.: 90 Region Association: Upper MidWest 
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What pressures is a good starting point for the V-700's. I just purchased a set and will begin to use them next weeKend.
Thanks Van |
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| KenH |
Jul 11 2004, 12:11 AM
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#4
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Senior Member Group: Members Posts: 680 Joined: 16-January 03 From: Gilroy, CA Member No.: 156 |
Haaa - what pressure??? - the never quite answered question.
For A/X most start at the low 30's cold. For Track most start at the mid 30's. For A/X the lower pressure is sticker when the tires are "cold", as they do not get a chance to get to thier optimum 170-180 degrees. For the track the higher pressures run the tires "cooler" after they have warmed up. The track will get the tires to the 180 degree range. That being said, the Caster will also effect what pressure to run. For standard Caster start at 35 pounds "cold" and then lower the pressure 2 pounds at a time, after each run, until the car "sticks" the way you want. You can also chalk the side of the tires and lower the pressure untill you see the tire "rolling" on to the side wall then up it a little. There is no easy answer. Ken |
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| Van914 |
Jul 11 2004, 05:45 AM
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#5
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Van914 Group: Members Posts: 698 Joined: 5-January 03 From: Cincinnati, Ohio Member No.: 90 Region Association: Upper MidWest
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Keen,
Thanks for the reply. I have never used the Kuhmo before and going from an old set of BFG- R1's. I know the R-1's had a stiffer sidewall and I ran them in the 27lb range. With your infor I will start in the mid 30's. Thanks Van |
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| VegasRacer |
Jul 11 2004, 06:39 AM
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#6
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ELVIRA Group: Benefactors Posts: 8,524 Joined: 27-March 03 From: Between Scylla and Charybdis Member No.: 481 Region Association: None 
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QUOTE(KenH @ Jul 10 2004, 10:11 PM) For Track most start at the mid 30's. (IMG:style_emoticons/default/w00t.gif) Mid 30's is much to high for my car. (IMG:style_emoticons/default/Yack.gif) My base line number is to start with 27 front and 29 rear and adjust from there depending on how the car handles. |
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| Howard |
Jul 11 2004, 07:25 AM
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#7
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Incontin(g)ent Member Group: Benefactors Posts: 5,785 Joined: 24-July 03 From: Westlake Village, CA Member No.: 943 Region Association: None
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Toyo Proxes RA1 (40 treadwear)
25/27 seems to be the ticket for me. |
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| KenH |
Jul 11 2004, 09:28 AM
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#8
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Senior Member Group: Members Posts: 680 Joined: 16-January 03 From: Gilroy, CA Member No.: 156 |
See - it is the unanswered question.
Almost everbody is a little different. Different brands, style of tires, car setup, and driving skills will use different pressures. My car likes equal pressure in all 4 tires, others like the front and rear to be different. Front-to-rear pressure difference will effect Oversteer & Understeer which should also be taken into accout while setting the pressure. Just keep tweeking till the presure matches your driving requirments. Ken |
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| EdwardBlume |
Jul 11 2004, 10:29 PM
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#9
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914 Wizard Group: Members Posts: 12,338 Joined: 2-January 03 From: SLO Member No.: 81 Region Association: Central California
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good primer. thanks!
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