It describes the tyre’s key dimensions: 235 is the width in millimetres, 85 is the sidewall height as a percentage of the width, and R16 means radial construction for a 16-inch rim. This combination creates a relatively tall tyre, which is why it is popular on older and work-focused 4x4 setups where ground clearance and sidewall compliance matter.
Match the minimum load index and speed rating shown on your vehicle placard or handbook, then choose higher only if you need extra headroom for payload, towing or motorhome conversions. Many options in this size are available as reinforced or commercial-rated (often marked C) to suit heavier duty use, but the correct choice depends on your axle loads and intended use.
For mostly tarmac driving, a road-focused pattern typically gives quieter running, shorter braking distances and better fuel economy. If you regularly use green lanes, farm tracks or wet grass, an all-terrain pattern can offer stronger traction and tougher construction, with a small trade-off in noise and rolling resistance. Choose based on where you drive most, then compare EU label ratings and user reviews before buying.
Often yes, because the overall diameter can be very similar, but it is not a guaranteed direct swap. Check wheel width compatibility, steering and arch clearance at full lock and full compression, and confirm any change is acceptable for your vehicle and insurance. If you rely on accurate speedometer readings, it is also worth checking for any difference after fitting.
Use the pressures on your vehicle placard as the starting point, then adjust only within the manufacturer guidance for load and driving conditions. Heavier loads and towing normally require higher pressures, while some off-road conditions may use lower pressures to increase the contact patch, followed by reinflation before returning to the road. If you are unsure, share your vehicle, load and tyre specification and choose a setup that keeps wear even across the tread.
