I have 20" rims, but thinking about replacing them with 17" for winter and off road drive, since there are lot more options for winter and all-terrain tires for 17". Has anyone tried this? On the forum for 3rd Gen RX, people suggesting using Toyota Sienna rims, but sure the same would be true for the 4th gen. Thanks.

 

I haven’t seen them that small on a RX but how about a set of the OEM 18s? In my area I always see them going for $2-400 on craigslist.

 

I tired with 17" steel wheels from my NX and they did not fit.

 

Make sure the bolt pattern and thread size of any intended wheel will fit your vehicle. Wheels with the same bolt count don't necessarily have the same bolt pattern. www.wheel-size.com is useful for determining fit.