Could it be that the higher pressure changed the front wheels contact pressure center which was reflected in steering geometry?
ie. Older car, cumulative wear of all the steering components, which "in effect" change the caster/camber of the front end, which translates to "buttock feel" that the rear end was "loose"? Following that line of thinking, at 32 PSI the tire is harder, the contact area is smaller, and steering becomes more "sensitive".... at 28 PSI the tire is softer, the contact area is spread over a wider area, and the softer tire "cushions" the worn component movement of the steering assembly. Result, less "squirrel"... [engineering term, I'm sure]..... ;)) Grant... AZ... On Tue, Jan 24, 2012 at 7:47 PM, E M <pokieba...@gmail.com> wrote: > After work, did you check the pressures "cold", or after your drive home? > My backside is quite sensitive to differences in tire pressures. I can > feel a 4 lb difference, but I'm a little surprised it would take your car > from being really stable, to where the back end feels like it's walking all > over the place. I guess some cars are more sensitive to pressure changes > than others. Wasn't the old 300SEL 6.3 really sensitive to tire pressures, > or they had something funky going on with the tires, that owners often > complained about ?? > > Ed > 300E > > On 24 January 2012 21:16, Curt Raymond <curtlud...@yahoo.com> wrote: > > > I put the snowtires from my '83 240D onto my '78 240D the other day. They > > were a little squirmy at first but I figured they just needed to get > fully > > warmed up with a good drive, they've been sitting over a year after all. > So > > I aired them up good Sunday night for the drive to work Monday morning. > > > > On the way to work Monday when I hit 65mph the car suddenly got VERY > > squirrelly. The rear end felt like it really wanted to wag. I slowed down > > and it was fine again, any time I was over 65mph though it would get all > > weird. > > After work I took a look at tire pressure hoping one tire had gone low > and > > realized I had mistakenly put 32psi in the FRONT and 30psi in the REAR. I > > bled the fronts down to 28psi and on the way home powered up to 75mph > with > > no stability issues at all. > > > > In retrospect the feeling was almost exactly like when a trailer with to > > little tongue weight tries to wag the truck. It amazes me that tire > > pressure can have that effect... > > > > -Curt > > > > _______________________________________ > > http://www.okiebenz.com > > For new and used parts go to www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > > > To Unsubscribe or change delivery options go to: > > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > > _______________________________________ > http://www.okiebenz.com > For new and used parts go to www.okiebenz.com > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > _______________________________________ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
