Tirerack seems to indicate that the 235/55R20 size is a suitable snow tire for the 21" wheeled car, see their suggestions below. Hopefully the wheels you have them mounted on are compatible (clearance for the caliper, etc). Not sure how to determine that in advance, maybe whomever set you up with the snow wheel/tires you currently have, can answer that.

https://www.tirerack.com/tires/TireS...ar=235%2F50-21

 

No reason the snow tires won’t fit. Same bolt pattern, tire width, and same tire circumference. Unless Lexus made big changes to the offset, you’ll be good to go. Caliper clearance should be no issue since 19” wheels are standard.

 

Thanks! That's great to know since those things aren't cheap! LOL!

 

Don't forget LOAD RATING. You can look up any differences on TireRack.com You can compensate for minor differences by adjusting PSI.

Also (just for grins) look up circumference to see how the different size tires will affect your speedometer reading. Oh wait, I did it for you.

http://www.powerdog.com/tiresize.cgi

No significant difference.

 

I knew the circumference would be good because the snows are just a -1 setup. Same width, one inch smaller wheel, sidewall percentage up 5%. No need to calculate. Putting the 21" wheels from a 2023 RX on a 2022 RX would be a +1 wheel/tire setup with same width, one inch bigger wheel, sidewall percentage down 5%. Load rating is a tire specific rating and doesn't effect fitment on the car but can effect safety if it is woefully inadequate which is unlikely for large tires on a SUV.

 

As far as I know, 2023 RX has different wheel mounting radware (Lug bolts vs. lug nuts). Toyota OEM rims from 2022 and below will not fit the new RX5 without some aftermarket stud adapters.

 

I know the pattern and spacing is unchanged. Hard to find bolt vs. lug nut info. Shouldn't matter as far as the wheels since they'll be the same if you use lug nuts or lug bolts.

 

Please let us know if your find a way to mount there old RX wheels on the new RX.

I an really curious. I have not been able to find any M14 lug bolts with flat washer mounting face ( old Toyota/ Lexus wheel lug nuts).

 

Snap. Did they move from a flat seat to a ball seat when they switched from nuts to bolts? Would definitely need some different bolts then. There should be enough market for them that someone would make them.

 

Just a note that when I was picking up my RX350h, the dealer had me sign a form that said no chain is allowed on the tires, but tire belts are fine. So, just be aware!!!

 

I don’t have the RX yet but I have Michelin xclimate 2 on my van. They are unidirectional and have similar patterns like my usual winters. Great tires and traction and handle snow well.

 

on a 500h does anyone know if a 19” tire would fit. I don’t see why not but haven’t seen anything. On this

 

I don't think 19's would fit three RX 500h. Brakes are much bigger on RX 500h

 

20s should definitely work, some 19' wheels might work. There seems to a touch over an inch between the calipers and wheel with the 21s.

 

I'm going to have to see what's available in October at snow tire time, I need a genuine snow tire...nothing available now near me, but that should change soon.