235/75 R15 Tyre Size — Meaning, Fitment & Alternatives
Last updated 5 September 2026. Computed and checked by the 247TyreCheck editorial team — see our editorial standards.
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What 235/75 R15 means
235/75 R15 is a 235 mm wide tyre with a sidewall 75% of that width (176 mm), on a 15-inch rim. Overall diameter works out at about 734 mm (28.9 in). It typically appears on MPVs, small vans and older compact SUVs.
UK: check prices for 235/75 R15 tyres at Tirendo US: check 235/75 R15 prices at WheelHero
235/75 R15 broken down
| Code part | Value | Meaning |
|---|---|---|
| Width | 235 | Section width in millimetres, sidewall to sidewall |
| Profile (aspect ratio) | 75 | Sidewall height as a percentage of width — 176 mm here |
| R | Radial | Radial construction (standard on modern car tyres) |
| Rim | 15 | Wheel diameter in inches (381 mm) |
Computed dimensions
| Measure | Value |
|---|---|
| Overall diameter | 734 mm (28.9 in) |
| Circumference | 2304 mm (90.7 in) |
| Sidewall height | 176 mm |
| Revolutions per mile | ≈ 698 |
| Revolutions per km | ≈ 434 |
These are computed reference values from the size code arithmetic — actual measurements vary slightly by brand and model. Working in different units? Convert mm to inches with the unit converters at 247QuickTools.
Tyre Owner Essentials
Typical vehicles
Taller sidewalls in this class carry load well and shrug off kerbs, which is why van and MPV fitments favour it. Check load index carefully — van fitments often need reinforced (XL/C) tyres. To confirm the exact original-equipment sizes for your car, look up your car's full specs, including OE tyre sizes, at 247VehicleCheck.
Checking your current tread? Owners often keep a tread depth gauge in the glovebox — UK legal minimum is 1.6 mm across the central three-quarters of the tread.
Speed and load ratings commonly sold in 235/75 R15
This size is commonly sold in H (130 mph) and V (149 mph) ratings, frequently with reinforced (XL) load indices for SUV and load-carrying use. See the full speed rating table and load index table for what each code is rated to.
Alternative & equivalent sizes (±3% diameter)
Sizes within ±3% of this tyre's 734 mm overall diameter keep your speedometer and gearing close to accurate. Always check clearance, rim width compatibility and load rating before switching, and never mix constructions across an axle.
| Alternative size | Overall diameter | Difference |
|---|---|---|
| 285/35 R21 | 733 mm | -0.1% |
| 235/70 R16 | 735 mm | +0.3% |
| 285/40 R20 | 736 mm | +0.3% |
| 295/30 R22 | 736 mm | +0.3% |
| 225/55 R19 | 730 mm | -0.5% |
| 235/65 R17 | 737 mm | +0.5% |
| 255/35 R22 | 737 mm | +0.5% |
| 255/40 R21 | 737 mm | +0.5% |
| 255/45 R20 | 738 mm | +0.5% |
| 275/45 R19 | 730 mm | -0.5% |
Tyre pressure for 235/75 R15
Correct pressure depends on your vehicle and load, not on the tyre size alone — always follow the placard inside the driver's door or the handbook. Typical car pressures fall between 30 and 36 psi. For psi-to-bar maths, the calculators at 247Calculators can help. A monthly check with an accurate gauge catches slow leaks before they wear the shoulders.
Recommended Accessories
FAQ
What does 235/75 R15 mean?
235/75 R15 means the tyre is 235 mm wide, its sidewall is 75% of that width (176 mm), and it fits a 15-inch wheel. The R stands for radial construction.
What is the overall diameter of a 235/75 R15 tyre?
About 734 mm (28.9 inches), computed from the size code: 15-inch rim plus two sidewalls of 176 mm. Actual measurements vary slightly by brand.
Can I fit a different size instead of 235/75 R15?
Only if the alternative stays within about ±3%% of the original overall diameter, fits your rim width, clears the bodywork and meets the placard's load and speed ratings. When in doubt, keep the placard size.
What pressure should 235/75 R15 tyres run at?
Pressure is set by the vehicle, not the tyre size — check the placard inside the driver's door or your handbook. Typical car values fall between 30 and 36 psi.
Where can I buy 235/75 R15 tyres?
UK buyers can check current 235/75 R15 stock and pricing at Tirendo; US buyers (or US-size equivalents) can check WheelHero — both links above are live retailer searches for this exact size, not a generic homepage. Independent local fitters are also worth a call for same-day fitting.
Is 235/75 R15 the same as 235/75-15 or 235 75 15?
Yes — 235/75 R15, 235/75-15 and 235 75 15 (with slashes, a dash, or just spaces) all describe the exact same tyre size. Retailers and search engines write the code differently, but the R always means radial construction and the numbers mean the same thing regardless of punctuation.
Is 235/75 R15 a common size, or hard to find?
A widely-stocked size — it has 10 close alternative sizes in our reference within ±3% overall diameter, which usually means multiple brands and price points are readily available.
Related pages on this site
Last updated:
Data: computed reference values (ETRTO tyre-size arithmetic), build date 5 September 2026. Reference only — always follow your vehicle manufacturer's placard or handbook.