I'm sure I read 250, but given my age and hatred of reading glasses, I may be wrong!

Even 50 lbs will make a difference.

I suspect the large caster angle puts quite a bit of force on the wheels while driving.

Peter

__________________
1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!