The quick answer
Compare wet grip, rolling-resistance efficiency and external rolling noise for the exact tyre specification. Read the scale printed on the label: Great Britain and Northern Ireland have different labelling frameworks. A good grade does not override size, load, speed or vehicle fitment requirements.
Check compatibility before comparing grades
Ask for the complete tyre specification and product name. An efficient tyre that is unsuitable for the vehicle is not an option simply because its label looks better. Confirm the required load index, speed rating and tyre type first.
The same product family can have more than one size and specification. Compare the label for the tyre you would actually receive rather than a generic marketing image or a label for a different version.
Understand the three principal measures
| Label information | What it helps compare | What it does not establish |
|---|---|---|
| Fuel efficiency / rolling resistance | The tyre’s rolling-resistance category. | Your vehicle’s exact fuel bill. |
| Wet grip | A standardised wet-grip category. | Safety at any speed or in every wet-road condition. |
| External noise | Noise emitted outside the vehicle. | Guaranteed quietness inside the cabin. |
GOV.UK explains the label measures and the GB/NI frameworks. The label is a comparison aid, not an instruction to change your driving to exploit a grade.
Read the scale that is actually shown
Current GOV.UK guidance describes A-to-G performance classification in Great Britain, while Northern Ireland uses A-to-E fuel-efficiency and wet-grip classes and A-to-C external-noise classes. You may encounter different-looking labels in product information. Check the market and scheme rather than assuming every illustration uses the same scale.
The external sound level is also expressed in decibels. If a listing seems inconsistent with the quoted product, ask for the actual label and clarification before placing the order.
Know the label’s limits
A label does not cover every handling characteristic, wear pattern, lifespan or operating condition. It is also separate from the vehicle’s approved fitment and maintenance requirements. Do not translate a wet-grip grade into a guaranteed braking distance on your own route.
Pressure, tyre condition, weather and driving remain relevant. A highly rated new tyre cannot make an overloaded vehicle, damaged wheel or excessive speed acceptable.
Ask for a useful comparison
Give the provider the compatible specification and explain your use: regular motorway travel, short urban trips, loaded van work or seasonal conditions. Then ask how the suitable alternatives differ in their label information and other relevant characteristics.
You do not need to request an entire brand catalogue. Two or three clearly specified options with their current label information, availability and total fitting prices are easier to compare meaningfully.
Keep the quote tied to the product
Ask the provider to confirm whether a substitution needs approval if the original tyre is unavailable. If the product or service description changes, revisit the comparison; the earlier label may no longer describe the tyre being supplied.
For a Fix My Tyre enquiry, send the registration, tyre markings if safely available and location. We confirm the replacement requirement and price before agreeing attendance. This guide does not imply that every labelled product is held in our mobile stock.
Common questions
Does a good wet-grip grade make a tyre suitable for my car?
No. The complete approved fitment still needs to be checked.
Does the noise figure measure noise inside my car?
It describes external rolling noise. Cabin noise depends on more than this label measure.
Why do some tyre labels use different grading scales?
Great Britain and Northern Ireland have different frameworks. Check the label scheme and actual product information rather than comparing letters without context.
Sources and further reading
Guidance checked on 11 October 2026. Use the current official instructions for your vehicle and circumstances.