I just got inherited my dad's 2003 LS430 after he died last year. Now I know why he was always bragging about how nice of a car it was. I'm curious about upgrading the wheels on it and wanted to know what are the biggest wheels I can put on it without any changes to the suspension. Thank you in advance for any help you give.

 

I have seen LS's with 22" wheels. I wouldn't go bigger than 20" though. Also keep in mind that offset plays a big part in if modifications will be needed. The front calipers are huge so a high disc wheel or spacers are required.

 

You can go up to 22 inch wheels. 20 inch wheels are more common though.

 

Thanks guys. Do you know what's involved in tricking one out with air suspension so it will raise and lower? That's some crazy cools stuff right there.