2026 model year · Third generation (TF)

Mazda BT-50 tire size

Largest standard tire, 2026265/60R18

Maker30.5 in tall, nominal

The 2026 Mazda BT-50 comes on 255/65R17 or 265/60R18 tires as standard, by trim, per the Mazda BT-50 digital brochure with specification tables.

255/65R17: XS, XT Single Cab 4x4; XS Dual Cab Pickup 4x4, XT.

265/60R18: XTR, GT, BOSS, SP, Thunder.

Mazda BT-50 digital brochure with specification tables (PDF created 12 June 2026)

Standard sizes: 2
Wheels: 17–18 in

XTR Dual Cab Pickup 4x2 3.0L, drawn to scale from its published dimensions.

01 / Stock

Tires and wheels on every 2026 BT-50

The size each configuration leaves the factory on, and the one an option package swaps in. These are Mazda’s Australian-market specifications.

2026 Mazda BT-50

MakerEstimate ±

Stock tire and wheel sizes of the 2026 Mazda BT-50 by configuration
Configuration	Tire	Tall in, nominal	Wheel
XS, XT Single Cab 4x4	255/65R17	30.1	17 x 7.0 J Steel
XS Dual Cab Pickup 4x4, XT	255/65R17	30.1	17 x 7.0 J Alloy
XTR, GT, BOSS, SP, Thunder	265/60R18	30.5	18 x 7.5 J Alloy

Tire, wheel and fitment figures are the maker’s. “Tall” is worked out from the size code (dashed); a real tire measures a little differently. —: not in the documents we hold yet.

SourceMakerEvery figure above is Mazda’s, from this document.

Mazda BT-50 digital brochure with specification tables (PDF created 12 June 2026) · Mazda Australia

Documents last checked Oct 12, 2026. How we read them and what the marks mean: how we source the numbers. A figure doesn’t match its document? Report a wrong number.

02 / Bigger tires

What the next sizes up change

From each stock size, the common larger sizes on the same wheel: how much taller, how far the axles rise, what the speedometer shows and how the axle ratio behaves. Whether one fits your BT-50 depends on lift, wheel offset and trim; these figures don’t say.

From 255/65R17Stock on the XS, XT Single Cab 4x4; XS Dual Cab Pickup 4x4, XT · 30.1 in tall

What larger tires change compared with the stock 255/65R17
Size	Tall in	Axles rise in	At an indicated 60 true mph	Axle ratio acts like	Compare
255/65R17stock	30.1	0.0	60.0	3.583 3.727	Baseline
265/70R17+1.6 in taller	31.631.1 to 32.1	+0.8+0.5 to +1.0	63.162.2 to 64.1	3.413.36 to 3.46 3.543.49 to 3.60	Compare →
285/70R17+2.7 in taller	32.732.2 to 33.2	+1.3+1.1 to +1.6	65.364.3 to 66.3	3.293.24 to 3.34 3.423.37 to 3.48	Compare →
285/75R17+3.8 in taller	33.833.3 to 34.3	+1.9+1.6 to +2.1	67.566.5 to 68.6	3.183.14 to 3.23 3.313.26 to 3.36	Compare →
315/70R17+4.3 in taller	34.433.8 to 34.9	+2.2+1.9 to +2.4	68.667.6 to 69.6	3.133.09 to 3.18 3.263.21 to 3.31	Compare →

Estimate ±Worked out from the nominal sizes; the small line is the range for real tires within 1.5% of nominal.

From 265/60R18Stock on the XTR, GT, BOSS, SP, Thunder · 30.5 in tall

What larger tires change compared with the stock 265/60R18
Size	Tall in	Axles rise in	At an indicated 60 true mph	Axle ratio acts like	Compare
265/60R18stock	30.5	0.0	60.0	3.727	Baseline
265/70R18+2.1 in taller	32.632.1 to 33.1	+1.0+0.8 to +1.3	64.163.1 to 65.1	3.493.44 to 3.54	Compare →
275/70R18+2.6 in taller	33.232.7 to 33.7	+1.3+1.1 to +1.6	65.264.2 to 66.2	3.433.38 to 3.48	Compare →
295/70R18+3.7 in taller	34.333.7 to 34.8	+1.9+1.6 to +2.1	67.466.3 to 68.4	3.323.27 to 3.37	Compare →
285/75R18+4.3 in taller	34.834.3 to 35.4	+2.2+1.9 to +2.4	68.567.4 to 69.5	3.273.22 to 3.32	Compare →
35x12.50R18+4.5 in taller	35.034.5 to 35.5	+2.2+2.0 to +2.5	68.867.8 to 69.8	3.253.20 to 3.30	Compare →

Estimate ±Worked out from the nominal sizes; the small line is the range for real tires within 1.5% of nominal.

Assumption, not data

Heights come from the size code. A real tire of a size measures within about 1.5% of it, depending on brand, tread, wheel width and pressure, so each figure carries that range. The axles rise by half the change in height; the body only rises with a lift.

03 / By year

BT-50 stock tires by model year

Stock tire sizes of the Mazda BT-50 by model year
Year	Stock sizes
2026	255/65R17 XS, XT Single Cab 4x4; XS Dual Cab Pickup 4x4, XT 265/60R18 XTR, GT, BOSS, SP, Thunder
2020	215/70R16 XT Single Cab 2.2L 4-cylinder turbo-diesel 6-speed manual 255/70R16 XT Chassis 4x2 Hi-Rider/4x4; XT Dual Cab Utility 265/65R17 XTR, GT
2019	215/70R16 XT Single Cab 2.2L 4-cylinder turbo-diesel 6-speed manual 255/70R16 XT Chassis 4x2 Hi-Rider/4x4; XT Dual Cab Utility 265/65R17 XTR, GT
2018	215/70R16 XT Single Cab 2.2L 4-cylinder turbo-diesel 6-speed manual 255/70R16 XT Chassis 4x2 Hi-Rider/4x4; XT Dual Cab Utility 265/65R17 XTR, GT
2017	215/70R16 XT Single Cab 2.2L 4-cylinder turbo-diesel 6-speed manual 255/70R16 XT Chassis 4x2 Hi-Rider/4x4; XT Dual Cab Utility 265/65R17 XTR, GT

The 2026 BT-50 belongs to the generation below; their pages have each configuration’s clearance, angles and weights.

Mazda BT-50 TF (2020–present): full specs

04 / Next

Try a size on your rig

Tire size calculatorPut 265/60R18 next to 265/70R18 or any size you’re eyeing, with this BT-50’s gearing.Compare sizes BT-50 specsClearance, angles and weights, and the rig builder to see a lift and bigger tires on it.Open the spec plate BT-50 towingTowing, payload, GCWR and tongue weight for every configuration.See towing Tire sizes by vehicleEvery stock size on the trucks and SUVs we cover, by wheel diameter.Browse sizes

05 / FAQ

Questions people ask

How far off is the 2026 BT-50’s speedometer with bigger tires?

Set for the stock 255/65R17, with 265/70R17s it reads about 4.9% low: 63.1 mph at an indicated 60 (62.2 to 64.1, by brand) and with 315/70R17s it reads about 12.5% low: 68.6 mph at an indicated 60 (67.6 to 69.6, by brand). Worked out from the nominal sizes.

What size wheels does the 2026 BT-50 have?

17 x 7.0 J Steel: XS, XT Single Cab 4x4. 17 x 7.0 J Alloy: XS Dual Cab Pickup 4x4, XT. 18 x 7.5 J Alloy: XTR, GT, BOSS, SP, Thunder.

What is the biggest tire the 2026 BT-50 comes on?

As built, the 265/60R18, about 30.5 in tall (nominal), on the XTR, GT, BOSS, SP, Thunder.

Did the Mazda BT-50’s tire sizes change by year?

2026: 255/65R17, 265/60R18. 2020: 215/70R16, 255/70R16, 265/65R17. 2019: 215/70R16, 255/70R16, 265/65R17. 2018: 215/70R16, 255/70R16, 265/65R17. 2017: 215/70R16, 255/70R16, 265/65R17.