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Query on recommended tire pressure and weight front to rear?

7083 Views 8 Replies 7 Participants Last post by  Nyyyce&Eeeezy
The door card recommended tire pressure is 29 PSI front and 35 PSI rear on the 560SL. The weight distribution is heavier in front, about 55% front 45% rear. I thought that tire pressure should be directly proportional to load. So perhaps there is insightful expertise on this board to explain why the heavier front gets the lower pressure?

To add to this mystery, my 450SL door card said 32 PSI front and 26 PSI rear, with an approximate weight distribution of 57% front. So what is the basis for the OEM pressure differentials between front and rear across the 107 series? Anybody find good results with different sets of pressure?

Thank you for your ideas.
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Just woke the car up (a little later than normal) from her winter nap in the garage where I set the tires to 40 on all four tires, but have been using the pressure listed on the door during the spring/summer/fall for the last several years since buying the car
i.e: 30 in the front (rounded off from 29) with 35 in the rear, and never thought about doing it any differently.
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