I just had a set of Michelin Primacy MXV4s installed on the front of my S420 and now my car pulls noticeably to the left when I hold the steering wheel straight ahead. Before the tire swap, the car's tracking was perfect. I'm having a hard time seeing any connection between a set of new tires and what appears to be an alignment problem.

Has anyone ever experienced this before?

__________________
"It's not about how fast you can go, but how well you can go fast."

Bob in Richmond

'97 S320 (LWB), Ruby Red Metallic, 73k miles
'97 S420V, Smoke Silver Metallic, 155k miles

If the alignment is off before a new tire swap, the new tire thread depth will react to the prvious poor alignment.

__________________
A Dalton

Swap front tires left to right, If it still pulls the same direction, you need an alignment. If it now pulls right you have a failed belt in one of the tires.

__________________
81 300CD (sold) 1972 280 SEL 4.5 (sold) 1966 250 S 4 spd (sold) 1974 450 SL (sold) 86 BMW 325ES (sold), 1973 280C (sold) 1988 300 SE.

Ignore the above post. Those tires are directional and would have to be dismounted to swap L to R.

__________________
-tp


1990 300SE "Corinne"- 145k daily driver - street modified differential - PARTING OUT OR SELLING SOON - PORTLAND OR. AREA - PM ME FOR DETAILS
1988 560SEL "Gunther"- 190K passes anything except a gas station
1997 S420 - 265k just bought it with a rebuilt trans. Lovely condition

Also check tire pressure to make sure the left is not under-inflated.

__________________
2008 E350 4matic / Black/Anthracite

------------------------------------
Gone but not Forgotten:
2001 E430 4matic, 206,xxx miles, Black/Charcoal
1995 E320, 252,xxx miles, Black/Grey
1989 260E, 223,00 miles, Black/Black

Did not know they were directional so swap front to rear.

__________________
81 300CD (sold) 1972 280 SEL 4.5 (sold) 1966 250 S 4 spd (sold) 1974 450 SL (sold) 86 BMW 325ES (sold), 1973 280C (sold) 1988 300 SE.

I have a set on one of my cars. They are NOT directional. Feel free to swap L-to-R.

no...take the thing back to where you purchased the tires and have them fix it....really....

I put the same tires on my E320 about a year ago, and mine aren't unidirectional???

Michelin Primacy MXV4

__________________
08 W251 R350
97 W210 E320
91 W124 300E
86 W126 560SEL
85 W126 380SE Silver
85 W126 380SE Cranberry
79 W123 250
78 W123 280E
75 W114 280

I'm an idiot and I owe an apology. Sorry.

I confused the MXV4s (great tires BTW) with another set I have......


So, Ignore me instead..... I sincerely hope I didn't cause any hardship for the OP.

__________________
-tp


1990 300SE "Corinne"- 145k daily driver - street modified differential - PARTING OUT OR SELLING SOON - PORTLAND OR. AREA - PM ME FOR DETAILS
1988 560SEL "Gunther"- 190K passes anything except a gas station
1997 S420 - 265k just bought it with a rebuilt trans. Lovely condition