If you’ve seen lexus RX330 33 inch tires than you definitely know how good do they look in comparison with narrow factory wheels. They not only provide a better grip on unpaved roads but also improve the driving comfort on concrete roads and make the vehicle more stable. So if you really want to outfit your RX with 31 inch wheels (265/65R17), we want to assure you that this change will not be as complicated as you may think. View the full list of easy to install spacer lift solutions for lexus RX330:
List of factory tire sizes of Lexus RX and their equivalent in inches
Below is the list of Lexus RX factory equipped wheel sizes and their equivalents in common off-road tire sizes. The information is based on OEM fitment lists and size converter.
|Generation||Years of Production||Factory Tire Size Metric||Factory Tire Size Equivalent in Inches|
|1st gen UN93||1996-2002||275/65R17||31"|
|2nd gen U222||2003-2006||265/70R17||32"|
|3rd gen U324||2007-2017||265/70R17||32"|
|4th gen U553||2018-2019||275/65R18||32"|
As you see the factory tires are just a little smaller, so fitting 31s would only require a few inch lift.
Common 33 inch and 35 inch tires
- 33 x 11.5 x R20
- 33 x 12.5 x R17/R18/R20
- 35 x 11.5 R17/R18/R20
- 35 x 12.5 R17/R18/R20
Common 33 inch size metric equivalents
- 17 inch rim – 265/75R17, 275/75R17, 285/70R17
- 18 inch rim – 265/70R18, 275/70R18, 285/65R18 295/65R18
Common 34 inch size metric equivalents
- 17 inch rim 315/70R17
Common 35 inch size metric equivalents
- 18 inch rim – 315/70R18, 325/65R18
How To Fit Big Tires On Lexus RX300 / RX330 / RX350 / RX400h
Fitting a Lexus RX with big wheels is just a question of time for many fans of the outdoor activities, off-roading and those who often drive on country roads. The majority of modern SUV require some modifications to accomodate 31″ tires. Ideal setup would include 2.5″ suspension lift, .5″ strut spacers (not spring spacers) in front, 1″ strut spacers in rear, + sport Highlander rear struts for extra 1.25″ of lift.
Needless to say that aside of the obvious benefits in the off-road capabilities you’re also improving the visual appeal of your SUV. Taller and wider stance along with beefy tires create an image of a tough truck, ready to handle any challenge you can throw at it.
The driving characteristics of a Lexus RX on 31-33 inch tires will not be changed dramatically so you will still be able to maintain normal ride quality. A slight drop in the gas mileage may be noticed and it should not exceed 1-2MPG. The suspension geometry will remain the same unless you decide to go with extremely low offset, which will widen the track a lot.
*Since the suspension modifications and the installation of the oversized tires require advanced measurements and depend on many parameters, such as the vehicle sub-model, trim level, state of the suspension components, aftermarket upgrades, etc., we highly recommend to confirm fitment parameters for your particular vehicle with the sales representative of your lift and tire supplier before making a purchase. The recommendations in this article are presented for general informational purposes only, so we are not responsible for any problems with the wheel and tire fitment or any other damage that may occur to your vehicle.
Automotive journalist and technical writer at Offroadium.com with more than 10 years of experience in the sphere of aftermarket parts and 4×4 vehicle modifications. Passionate about off-roading, outdoor adventures, and an active lifestyle.