Is there an easy way to check if my tires are rubbing? I put on a set of 255/45R19 tires with 19x8.5 Enkei rims. I get a tire rubbing sound when I have the steering wheel turned all the way while doing parking lot maneuvers.
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I wouldn't think that a 10mm difference (5mm on each side) would cause rubbing. Those are some pretty tight tolerances.
I would just simply pull the wheel off one of the corners and look for any rub marks.
If you've got kids, you can borrow some of their sidewalk chalk and mark the side and corner edge of the tire. It'll make it easier to see where on the tire the rubbing is happening. It will also rub off on to the offending part of the fender.
I wouldn't think that a 10mm difference (5mm on each side) would cause rubbing. Those are some pretty tight tolerances.
A quick look below reveals the lower wishbone isn't the one piece A-arm we were expecting. Instead it's a pair of links, each with its own ball joint. This dual-pivot design moves the steering pivot axis out to the virtual point where the links intersect.
By so doing, the point where the steering axis reaches the ground is moved closer to the center of the front tire's contact patch, a condition known as a "zero scrub radius." We can't tell if the scrub radius is precisely zero or not just by looking, but the general goal of this design is to make it much smaller than it would have otherwise been with an A-arm and a single ball joint.
The tie rod (yellow) from the electric-assist rack-and-pinion steering unit acts ahead of the front axle centerline. From the look of things, this front steer arrangement wasn't merely chosen for maximum steering precision; its use also opens up space that allows the massive 85 kWh battery pack (red) to extend forward as far as possible.
Standard wheel used for the Model S are 245 (19" or 21"), so I guess 255 is slightly too wide... Where is Jerry when we need him ;-)
MNX, what's the offset on your rims?
+38
I think I'm going to try the sidewalk chalk trick today.
I'm thinking the 255 width may be the issue in the front. Even Elon had 245's in the front (265's in the rear) I believe. Not sure if the profile change would make a huge difference. Jerry33, am I totally off base here?
You could also try a tire with a more rounded edge. The guy in the 22" wheel thread said he was also getting some rubbing and switched to Pirelli's and the rubbing went away.
My 245/45-19 Michelin A/S plus's also rub, but only when going in reverse with the steering wheel turned 90% of the way...