02-16-2021, 07:39 PM | #5 |
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Look inside your driver door...should say 32PSI. I lower my rears to 28 for straight line racing.
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02-17-2021, 12:56 PM | #8 |
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If I am checking at cold temp
31 PSI FL 32 PSI FR 32 PSI RL 32 PSI RR If I am checking at 72 or above 34 PSI FL 35 PSI FR 35 PSI RL 35 PSI RR I only run 1 PSI off on the front left because the heat exchanger adds an extra PSI during normal driving.
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02-17-2021, 04:36 PM | #10 |
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There is always going to be variances, sun shining more on one side of the car, heat exchanger on the front driver side heating up 1 tire more. Temperatures aren't even the same across the board if you monitor your tire pressure via iDrive.
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02-18-2021, 11:25 AM | #11 |
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Interesting. Some of you guys run lower PSI than expected. I usually run 35/36. Maybe because I do a lot of highway driving. I thought it would be better at high speeds and better for gas mileage. Maybe I will try to run a little lower and see.
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02-18-2021, 02:20 PM | #13 |
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LOL! That's a running joke we have... Some guy floored it and whipped out, but blamed one rear tire being off from the others by 1PSI.
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02-18-2021, 02:54 PM | #14 |
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02-18-2021, 03:03 PM | #15 |
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The recommend PSI from BMW I believe is actually 32 PSI cold. If you drive at over 100mph it's a different PSI.
The lower PSI is better for traction and comfort too. Too high a tire pressure wears out the center faster.
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02-18-2021, 08:51 PM | #16 | |
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Higher PSI you can hit higher speeds safely, better mpg, dogshit traction, harsh ride, twitchy ass car, might wipe out and die |
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02-18-2021, 09:06 PM | #17 |
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I usually keep mine at 20 psi cause these cars are uncontrollable monsters in stock form so I got myself a set of beadlocks just to harness the beast. Just too much power for these skreets.
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02-22-2021, 04:21 PM | #18 |
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I hope this is a joke
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02-25-2021, 05:27 PM | #19 | |
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This is how I check. I get a live feed to my IPhone. If it's off by 1 psi car goes into limp mode. |
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02-25-2021, 06:12 PM | #20 | |
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So I went cold 30 LF and 31 psi for the other three. |
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