2020 Mazda Roadster RF tire and wheel sizes, bolt pattern and tire pressure

Bolt pattern 4x100 on every 2020 trim.

Tires for the 2020 Mazda Roadster RF

Sizes most trims come with first. Open your trim below for its exact size.

205/40R18 front + 225/35R18 rear Best-rated standard on 1 trim

Check price on Amazon · 205/40R18 front Check price on Amazon · 225/35R18 rear
195/50R16 Best-rated optional on 1 trim

Check price on Amazon · 195/50R16
205/45R17 Best-rated optional on 1 trim

Check price on Amazon · 205/45R17

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Trims sold in 2020: 1
Generation: ND
Other years: 2016
2017
2018
2019
2020
2021
2022
2023
All years (2016–2026)

1 trim sold in 2020

Open a trim for its tire and rim sizes, bolt pattern and tire pressure.

Mazda Roadster RF ND

2016–2023 1 trim

Roadster RF 2.0i (5BA-NDERC) 181 hp · 2.0L PE-VPR I4 205/40R18 83W / 225/35R18 85W 3 fitments

Generation: ND · 2016–2023
Power: 181 hp
Engine: 2.0L PE-VPR I4, Petrol
Center bore: 54.1 mm
Bolt pattern: 4x100
Thread: M12 x 1.5

Check price on Amazon · 205/40R18 Check price on Amazon · 225/35R18 Wheels 18x7 ET45 · 4x100 · 54.1 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
Front205/40R18 83W	Rim 18x7 ET45 ~~4x100~~	29 psi
Rear225/35R18 85W	Rim 18x8 ET45 ~~4x100~~	29 psi
205/45R17 84W	Rim 17x7 ET45 ~~4x100~~	29 psi
195/50R16 84V	Rim 16x7 ET45 ~~4x100~~	29 psi

How to read 83W: 83 is the load index (up to 1,074 lb / 487 kg per tire) and W the speed rating (up to 168 mph / 270 km/h). ET45 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres.

What these columns mean

Rim size: Rim diameter × width in inches, and the factory offset (ET) in millimetres, e.g. 18x7.5 ET25.
Bolt pattern (PCD): Number of studs and the diameter of the circle they sit on. It must match exactly.
Center bore: Diameter of the hub hole. Larger aftermarket bores need hub-centric rings.
Pressure: Recommended cold inflation pressure for that axle, in psi.
Staggered: A wider tire on the rear axle than the front. Front-to-back rotation is not possible.
Thread size: Lug bolt or nut thread — needed when buying aftermarket fasteners.