How to check your tyres
Your tyres are the only part of the car that connects you to the road surface, it is very important that you check the condition of your tyres.
Tyre pressures should be checked when the tyre is cold.
Valve caps need to be replaced after checking the tyre pressures
All tyres should be checked, including the spare.
The side walls of your tyre should be inspected for any cuts, bulges and splitting. Splitting is commonly seen on old tyres or tyres left for long periods without being used.
The legal minimum tyre tread depth is 1.6mm across the central three-quarters of the tyre. This means any tyre with less than this tread depth is considered illegal, and could result in a fine and penalty points on your driving licence. Experts recommend replacing tyres when they reach around 3mm of tread for optimal safety and performance.
UK tyre information.
- Legal tread depth: 1.6mm
- Check tread regularly: Use a tread depth gauge or a tread wear notification mark.
- Tyre pressure: Always maintain the correct tyre pressure as specified in your vehicle’s manual.
- Tyre size: Find the correct tyre size for your car by checking the vehicle’s manual.
- Important factors to consider when choosing tyres:
- Driving conditions: Choose tyres suitable for the type of roads you regularly drive on (e.g., wet weather, winter driving)
- Fuel efficiency: Look for tyres with good fuel economy ratings
- Noise level: Some tyres are designed to produce less road noise
- Brand reputation: Opt for tyres from reputable manufacturers
Information on the side wall of the tyre
On the side wall of the tyre you will see information similar to this, 185/45 R16 92W.
185 This refers to the width of your tyre in millimetres.
45 this refers to the hight of the side wall as a percentage of the width in millimetres.
185/100 x 45= 83.25
R stands for Radial, and most tyres today are made this way. It is important that the same type of tyre is used on each side of the car, a C (Cross ply tyre) should not be used on the same axle as a radial tyre.
16 is the diameter of the wheel in inches
92 This is the load rating and tells you how much the tyre can safely carry when inflated correctly. The weight of your car should not exceed the weight your tyres can safely carry when inflated correctly. If your car exceeds the safe weight for your tyres, this will damage the tyres, and possibly cause your tyres to blowout or get damaged and need replacing sooner.

W Speed rating
Tyre speed ratings in the UK range from L to Y, with L being the lowest and Y being the highest. The speed rating indicates the maximum speed at which a tyre can safely carry its recommended load.
Tyre speed rating examples
- L: 75 mph
- M: 81 mph
- N: 87 mph
- P: 93 mph
- Q: 99 mph
- R: 106 mph
- S: 112 mph
- T: 118 mph
- U: 124 mph
- H: 130 mph
- V: 149 mph
- W: 168 mph
- Y: 186 mph
Tyre manufacturers provide lots of information about their tyres and how to safely use them. Tyre fitting centres have trained staff that will be happy to help you make an informed decision. Remember your tyres are the only connection between your car and the road service, so its worth getting a quality tyre for your car.