I currently have a 2017 lexus IS350 F-sport. I tried getting niche rims but with a +40mm offset, the front rims where hitting the caliper and needed another 1/4" or so In order to fit. Has anyone else had this issue or know what the offset needs to be for the front rims?

 

Welcome to the forum!

If you can post more info about the wheels (height and width) we could probably give an answer.
The offset that would best fit depends on the width of the rim.

 

The size of of the wheels are 18x8. Im thinking of going to niche 19x8.5 with 35mm offset.

 

The 19x8.5 +35 should be fine. Sometimes the spoke design of the rims dictate the clearance of the rim, but usually you should be good with a +35 on an 8.5 inch wide rim.

Check out the wheel thread for more info, pics, and sizing options: https://www.clublexus.com/forums/is-...exclusive.html