 Good tire pressure?, 195/65/15 Bridgestone’s |
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Model Specific Information
914/4: 70 71 72 73 74 75 76 914/6: 70 71 72
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| swm914 |
 May 17 2008, 06:01 PM
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#1
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Member  Group: Members Posts: 82 Joined: 28-January 07 From: Palmyra, PA Member No.: 7,484 Region Association: None  |
I have on 195/65/15 Bridgestone’s on my '74 2.0 and am not sure what pressure is ideal. The original spec was of course for the original size tire.
I know it depends on driving syle etc. but what are suggestions for a car used for fun spins, cornering etc. but no extra hard manuvering. Different front vs back? Thanks Steve |
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| orthobiz |
May 17 2008, 08:28 PM
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#2
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Senior Member Group: Members Posts: 1,758 Joined: 8-January 07 From: Cadillac, Michigan Member No.: 7,438 Region Association: Upper MidWest 
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This is a GREAT question. And I don't know the answer. I usually inflate tires to about 2-4 pounds below the maximum allowed on the actual tire. I've never gone by the manufacturer's recommendations. But a friend recently insisted that the auto manufacturer knows better for the specific car.
I always thought a higher pressure was better for mileage, wear and even performance. Someone settle this, please! Paul |
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| Pat Garvey |
May 18 2008, 09:31 PM
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#3
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Do I or don't I...........? Group: Members Posts: 5,900 Joined: 24-March 06 From: SE PA, near Philly Member No.: 5,765 Region Association: North East States |
QUOTE(orthobiz @ May 17 2008, 08:28 PM)  This is a GREAT question. And I don't know the answer. I usually inflate tires to about 2-4 pounds below the maximum allowed on the actual tire. I've never gone by the manufacturer's recommendations. But a friend recently insisted that the auto manufacturer knows better for the specific car. I always thought a higher pressure was better for mileage, wear and even performance. Someone settle this, please! Paul Close-to maximum pressure is OK, if your 914 is loaded (no, not from drinking too many Pina Coladas). But under normal driving conditions, overinflation reduces the tread contact patch on the pavement, so handling will be compromised to some extent. In essence, you're riding on only a portion of the contact patch because you've stretched the tire with high pressures. Yes, increasing the pressure will increase fuel mileage, but you'll also have a harsher ride. But contemporary tires are designed to have pressure that will be most beneficial for your specific driving needs. The important thing for non-competitive driving is to keep the contact patch (all of it) on the pavement. Overinflating will "round" the patch, thus not putting all of it on the pavement. My suggestion (and this is only mine) is to follow the manufacurer specs, for your tire and car - for normal driving. Competitive driving can change all of this. Pat |
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| dw914er |
May 20 2008, 02:06 AM
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#4
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Planning Cities Group: Members Posts: 2,365 Joined: 1-March 08 From: Yucaipa, CA Member No.: 8,763 Region Association: Southern California |
a few pounds under the max pressure is where you want to be at.
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| Racer |
May 22 2008, 08:39 PM
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#5
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Senior Member Group: Members Posts: 787 Joined: 25-August 03 From: Northern Virginia Member No.: 1,073 Region Association: MidAtlantic Region |
Remind me what "stock" pressures are... 26F/29R?
I think 30F/30R would be fine. If you don't like oversteer, perhaps 30f/34r. |
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