Inside your gas cap there is a note saying if going over 100 mph, raise tire psi by 8 lbs pressure. At least thats what my 300Ce says....

i think with less pressure at higher speed, the tires will wobble a bit, but by adding pressure you make the tire stiffer which aids in high speed driving.

Alon

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'92 300CE
Metallic Black (Blue Flaked) on Parchment
Clear Corners
94-95 Tail-Lights
Black Grille Insert
78.5k Miles

Future Upgrades:
Sportline Suspension
17" AMG Monoblocks or EVO II's
Euro Headlights
Performance Chip
AMG Exhaust

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