Lexus tyre pressure and size guide

As the only direct connection to the road surface, the tyres of our cars deserve special attention. They should be in damage-free condition and wearing evenly across the breadth of the tyre and around the entire circumference, to a minimum legal tread depth of 1.6 millimetres.

But there is another important factor to be aware of that has a direct bearing on everything from safety and ride comfort to fuel economy and responsiveness – tyre pressure. Different wheel and tyre combinations require different tyre pressures, and these can sometimes alter between the front and rear of the vehicle.

Specific tyre sizes and inflation values are not mandated by law but set by each vehicle manufacturer. The tyre sizes specified from the factory and the pressures that Lexus recommends to inflate them will offer the best possible balance in overall performance in normal road conditions with a modest load on board. You will find this information for all current generation models in the table below.

Lexus tyre pressure and size guide

LEXUS MODEL YEAR FRONT SIZE / PRESSURE REAR SIZE / PRESSURE
CT 200h 2014 – 2017 195/65 R15 / 2.3 bar 195/65 R15 / 2.3 bar
CT 200h 2011 > 205/55 R16 / 2.2 bar 205/55 R16 / 2.2 bar
CT 200h 2011 > 215/45 R17 / 2.3 bar 215/45 R17 / 2.2 bar
IS 200t 2015 – 2017 225/40 R18 / 2.5 bar 255/35 R18 / 2.5 bar
IS 250 2013 – 2015 205/55 R16 / 2.5 bar 205/55 R16 / 2.5 bar
IS 250 2013 – 2015 225/45 R17 / 2.5 bar 225/45 R17 / 2.5 bar
IS 250 2013 – 2015 225/40 R18 / 2.5 bar 255/35 R18 / 2.5 bar
IS 300h 2013 > 205/55 R16 / 2.5 bar 205/55 R16 / 2.5 bar
IS 300h 2013 > 225/45 R17 / 2.5 bar 225/45 R17 / 2.5 bar
IS 300h 2013 > 225/40 R18 / 2.5 bar 255/35 R18 / 2.5 bar
NX 200t 2015 – 2017 225/60 R18 / 2.2 bar 225/60 R18 / 2.2 bar
NX 300h 2014 – 2017 225/65 R17 / 2.4 bar 225/65 R17 / 2.4 bar
NX 300h 2014 > 225/60 R18 / 2.2 bar 225/60 R18 / 2.2 bar
GS 250 2012 – 2014 225/50 R17 / 2.4 bar 225/50 R17 / 2.4 bar
GS 250 2012 – 2014 235/45 R18 / 2.4 bar 235/45 R18 / 2.4 bar
GS 250 2012 – 2014 235/40 R19 / 2.4 bar 265/35 R19 / 2.5 bar
GS 300h 2014 > 225/50 R17 / 2.4 bar 225/50 R17 / 2.4 bar
GS 300h 2014 > 235/45 R18 / 2.4 bar 235/45 R18 / 2.4 bar
GS 300h 2014 > 235/40 R19 / 2.4 bar 265/35 R19 / 2.5 bar
GS 450h 2012 > 235/45 R18 / 2.4 bar 235/45 R18 / 2.4 bar
GS 450h 2012 > 235/40 R19 / 2.4 bar 265/35 R19 / 2.5 bar
GS F 2015 > 255/35 R19 / 2.5 bar 275/35 R19 / 2.5 bar
RC 200t 2015 – 2017 235/40 R19 / 2.4 bar 265/35 R19 / 2.5 bar
RC 300h 2015 > 235/45 R18 / 2.4 bar 235/45 R18 / 2.4 bar
RC 300h 2015 > 235/40 R19 / 2.4 bar 265/35 R19 / 2.5 bar
RC F 2014 > 255/35 R19 / 2.5 bar 275/35 R19 / 2.5 bar
LC 500 2017 > 245/45 R20 / 2.3 bar 275/40 R20 / 2.3 bar
LC 500 2017 > 245/40 R21 / 2.3 bar 275/35 R21 / 2.3 bar
LC 500h 2017 > 245/45 R20 / 2.3 bar 275/40 R20 / 2.3 bar
LC 500h 2017 > 245/40 R21 / 2.3 bar 275/35 R21 / 2.3 bar
RX 200t 2016 – 2017 235/65 R18 / 2.5 bar 235/65 R18 / 2.5 bar
RX 200t 2016 – 2017 235/55 R20 / 2.3 bar 235/55 R20 / 2.3 bar
RX 450h 2016 > 235/65 R18 / 2.5 bar 235/65 R18 / 2.5 bar
RX 450h 2016 > 235/55 R20 / 2.3 bar 235/55 R20 / 2.3 bar
RX 450hL 2018 > 235/65 R18 / 2.5 bar 235/65 R18 / 2.5 bar
RX 450hL 2018 > 235/55 R20 / 2.3 bar 235/55 R20 / 2.3 bar
LS 500h 2018 > 245/45 R20 / 2.5 bar 245/45 R20 / 2.5 bar
LS 500h 2018 > 245/45 R20 / 2.5 bar 275/40 R20 / 2.5 bar

What if my Lexus is not listed here?

If you have a previous generation Lexus, the recommended tyre size and pressure values for your vehicle will either be listed on the door jamb around the B-pillar (see example below), on the inside of the glove box, or in the owner’s manual.

Please note that if your vehicle is fully laden or will be used for sustained high-speed driving, the tyre pressure values will need to be increased.
Specific information on this is also shown in the same locations listed above.

Learn more: Lexus tyre FAQs
Learn more: Winter driving advice by Lexus

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