2018 Lexus RX350 Spare Tire
The Lexus RX350 comes equipped with a temporary spare tire, also known as a "compact" or "donut" spare. Unlike a full-size spare, this temporary tire is designed only for short-term use until a flat tire can be fixed or replaced. The reason behind this is its smaller size, lower performance capabilities, and its inability to bear weight as a regular tire. The compact spare for a Lexus RX350 typically comes in size T155/85D18, but it's essential to check the vehicle's manual or placard located on the driver's door jamb to confirm the right size. Remember that the use of the temporary spare should be limited, and the speed should not exceed 50 miles per hour to ensure safe driving.
2018 Lexus RX350 comes with 2 OEM tire size options. Select the original equipment the tire size installed on your vehicle to see all spare tires that have roughly the same tire diameter and can be used as a temporary replacement in the event of a flat tire. Remember that load carrying capacity of the spare tire must be the same or higher than the load carrying capacity of the original equipment tires in order to safely support the weight of your vehicle. Refer to vehicle owner's manual or contact Lexus dealership to confirm the correct 2018 Lexus RX350 spare tire size.
235/55R20
235/55R20 tire has a diameter of 30.2". These temporary spare tires fit the acceptable tire diameter range of 29.3" to 31.1".
| Spare Size | Spare Diameter | Diameter Differential |
|---|---|---|
| T175/90D18from $290.30 | 30.4" | 0.7% |
| T175/80R19from $182.97 | 30" | -0.7% |
| T165/90D18from $115.96 | 29.7" | -1.7% |
| T165/90R18 | 29.7" | -1.7% |
| T175/90D17 | 29.4" | -2.6% |
| T175/90R17 | 29.4" | -2.6% |
| T175/90R18 | 30.4" | 0.7% |
235/65R18
235/65R18 tire has a diameter of 30". These temporary spare tires fit the acceptable tire diameter range of 29.1" to 30.9".
| Spare Size | Spare Diameter | Diameter Differential |
|---|---|---|
| T175/90D18from $290.30 | 30.4" | 1.3% |
| T175/80R19from $182.97 | 30" | 0% |
| T165/90D18from $115.96 | 29.7" | -1% |
| T165/90R18 | 29.7" | -1% |
| T175/90D17 | 29.4" | -2% |
| T175/90R17 | 29.4" | -2% |
| T175/90R18 | 30.4" | 1.3% |
More Lexus RX350 Spare Tires
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- 2017 Lexus RX350 Spare Tire
- 2016 Lexus RX350 Spare Tire
- 2015 Lexus RX350 Spare Tire
- 2014 Lexus RX350 Spare Tire
- 2013 Lexus RX350 Spare Tire
- 2012 Lexus RX350 Spare Tire
- 2011 Lexus RX350 Spare Tire
- 2010 Lexus RX350 Spare Tire
- 2009 Lexus RX350 Spare Tire
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- 2007 Lexus RX350 Spare Tire
All listed guides, data and/or calculations are for informational purposes only. Spare-Tires.com does not warrant or make any representations regarding the accuracy of or the results of the use of this information. Always refer to vehicle owner's manual for the correct spare tire size configuration.