 Tire pressure?, Kumho 195/50's |
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| Carlitos Way |
 Dec 6 2004, 07:34 PM
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#1
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I did it MY WAY  Group: Members Posts: 1,337 Joined: 14-September 04 From: Simi Valley, CA Member No.: 2,757 Region Association: Southern California  |
Not to sound dumb... but the PO of my car had the tires at about 40 psi. That seems a bit high. Any suggestions on what a GOOD pressure should be for everyday driving? The car gets a little scary to drive over 50 MPH right now.
Carlos |
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| nebreitling |
Dec 6 2004, 08:03 PM
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#2
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Member Emeritus Group: Members Posts: 3,314 Joined: 26-March 03 From: San Francisco Member No.: 478 |
what do you mean by "scary"?
my 195/50 712's like upper 38 or so. pretty firm |
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| Trekkor |
Dec 6 2004, 08:15 PM
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#3
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I do things... Group: Members Posts: 7,809 Joined: 2-December 03 From: Napa, Ca Member No.: 1,413 Region Association: Northern California |
I've always thought 32-35 psi was good for the street.
KT |
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| jwalters |
Dec 6 2004, 08:19 PM
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#4
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Sooo Close....... Group: Members Posts: 1,677 Joined: 14-May 04 From: Huntsville, AL Member No.: 2,068 Region Association: Europe |
(IMG:style_emoticons/default/wacko.gif) What does it say on the side of the tire?????
Because the car is so light---reduce that by 10-15% and you should have all the handling and ride to make you happy......... (IMG:style_emoticons/default/beer.gif) |
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| nebreitling |
Dec 6 2004, 08:23 PM
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#5
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Member Emeritus Group: Members Posts: 3,314 Joined: 26-March 03 From: San Francisco Member No.: 478 |
i had the kumho 712's at low 30's for a while with that same logic. car feels more tight and on rails with 'em pumped up. your mileage may vary,...
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| Carlitos Way |
Dec 7 2004, 11:29 AM
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#6
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I did it MY WAY Group: Members Posts: 1,337 Joined: 14-September 04 From: Simi Valley, CA Member No.: 2,757 Region Association: Southern California |
What I mean by scary is... when I get up to about 40 MPH or above, it seems as if the car is starting to wonder. Not sure if it's the tires, or if I have a problem with the suspension. I wanted to eliminate the tire pressure as a possibility first, kinda doing the "easiest fix first" thing first.
So I'll drop them to about 34 and see where they go... and if it's still scary... I guess I'll take a look at the suspension to see what I find. Thanks for your input! Carlos |
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| nebreitling |
Dec 7 2004, 11:48 AM
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#7
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Member Emeritus Group: Members Posts: 3,314 Joined: 26-March 03 From: San Francisco Member No.: 478 |
it ain't the tires..
get it fixed! lift the rear end and try to pull the tires side to side (suspect trailing arm bushings) |
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| Aaron Cox |
Dec 7 2004, 11:51 AM
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#8
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
get an ALIGNMENT!!! and chck your suspension bushings ASAP
Nathan, i run my falkens at 38 on the street, a little bumpy but they stick 10x better |
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| Carlitos Way |
Dec 7 2004, 01:41 PM
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#9
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I did it MY WAY Group: Members Posts: 1,337 Joined: 14-September 04 From: Simi Valley, CA Member No.: 2,757 Region Association: Southern California |
Yeah... it seems all that is in order... but this week I'm working on a MC upgrade/320i caliper upgrades... might not make it to the fun run this weekend.
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