Each wheel has an inner and outer race. The weight shift depends if you have 255 or 235 tires.

255s force is on bottom of the outer race and on the top of the inner race.

235s the force is on the bottom of the inner race and on the top of the outer race.

If you have 255s and a 235 spare the best way I've found to confirm a suspect bearing is to put the spare on each corner.

It's how i found out i had a bad bearing that made no noise; i put a spare on and it sounded like i had pea gravel bearings immediately. As bad as if i had a bad bearing getting worse for as year or two but it came to be instantly!

If the growl goes away or drops far in intensity you've found the wheel!

It's very often not the corner that's getting loaded to change during cornering, but when there is a distinct change from cornering you can often work out which side is at fault.

Example: since 255s are pre stressed top in, it means the outside wheel will flip which races are loaded. If it gets louder then more than likely it's the outside wheel but 235s are opposite and getting louder on the inside (of the curve) is the expectation.

If the sound gets quieter, the opposite applies.

Getting a bad bearing swapped is one of life's pure joy. Godspeed.


–awr–

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2011 E70 • N55 (me)
2012 E70 • N63 (wife)