[whitt1973]

I have about 400 miles on the new X7 now. At highway speeds I'm noticing tramlining to a degree that it seems like something is wrong. I've had it on multiple different road surfaces during windy and no wind conditions so I don't think that's the issue. The X7 has the 22" wheel option with the 275/40/22 front and 315/35/22 back. Yes, I know the 21" would have been ideal but my wife insisted on the 22" for the appearance. I'm familiar with the way run flats drive I have them on my Lexus LC500. Noisy and not ideal but it doesn't have the tramlining issue. Any advise?

[Orient330iNYC]

how much pressure are they running?

[whitt1973]

Great question. Just went out and checked. All 4 tires are 42-43 lbs. They are on the hot side I just finished a drive about 30 minutes ago. That would still put the front over the recommended 36 psi though. I'll set them at the proper cold tire recommendations and report back.

[AvGeek]

I have the same wheels/tires and get pretty bad tramlining as well, constantly have to correct to stay in the lane. I know others have chimed in with the same setup, I think it's unfortunately just a side effect of the wheel choice.

[gsobol]

I have 21" with RFT tires, tramlining is still a problem. I tried varied pressure combinations, and in my case running 3~5 psi higher than recommended seems to be the least problematic - that's not saying it fixes the problem, because it does not. I think this has to do more with suspension geometry, and the choices BMW took to attempt to keep the best sport handling. Notice also how X7 devours the tires.

[whitt1973]

Well darn that's not the response I was hoping for. I really don't like these run flats. I know the options for 22" tires are limited in non-run flats is anyone having good luck with what's available? Has a toe adjustment helped anything with the run flats?

[Orient330iNYC]

conti dws06 plus is now avail in the correct sizes. the softer sidewall should help

[ledphut]

Pirelli Scorpions are a good option that come in the size you need.

[Orient330iNYC]

Originally Posted by ledphut

Pirelli Scorpions are a good option that come in the size you need.

which scorpions? i didnt see any in 275/40-22 and 315/35-22 aside from the snows

[GCR]

Not unheard of for a brand new vehicle to need a proper alignment…….

[ledphut]

Originally Posted by Orient330iNYC

which scorpions? i didnt see any in 275/40-22 and 315/35-22 aside from the snows

For some reason they only show up if you use ‘22 model year.

Scorpion All-Season

[AvGeek]

Originally Posted by ledphut

For some reason they only show up if you use ‘22 model year.

Scorpion All-Season

Doesn't look like they make a 315/35/22?

[ledphut]

So weird as I currently run them as my winter set.

Their website is screwy as hell.

Here’s the Scorpion Zero in that size:

Scorpion Zero