It means a 295 mm wide tyre with a very short sidewall height of 25% of the width, designed for a 20-inch wheel. Because the sidewall is so low, correct pressure, wheel condition and alignment are especially important to protect the rim and maintain stable handling.
Check your current tyre size, the vehicle placard, and the wheel width before ordering. This size is typically used on wide 20-inch rims, so you should confirm your wheel is within an appropriate width range and that you have enough clearance for suspension travel and full steering lock if used on the front.
It is a noticeable drop in overall diameter, which can affect speedometer accuracy, gearing feel, ground clearance and how ABS and traction control behave. Only make the change if an approved fitment guide allows it for your exact model and you keep rolling diameters correctly matched across the axle and drivetrain.
Use the rating shown on your current tyres or the vehicle placard as your baseline, then match or exceed it when you buy. Many cars that run this size need higher load indexes and high speed ratings, so filtering by the correct ratings helps you avoid unsuitable options and stay compliant.
Availability can be limited because it is a specialist, low-profile performance size that is often offered mainly in summer patterns. If you need cold-weather capability, check the all-season and winter filters, and consider whether your vehicle has an approved alternative size for winter wheels.