FAQ

PRODUCT MAINTENANCE INFORMATION

Can I mount the tyre onto the rim by myself?

Taking off the tyres from the rim and replacing them can be dangerous. Attempting to mount the tyres with improper tools or procedures may result in a tyre explosion causing serious personal injury or even death. This is only a job for a qualified tyre service professional. Never perform tyre service procedures without proper training, tools, or equipment. For a qualified tyre service professional, please contact your nearest authorised Firestone Retailer by visiting our store locator.

What should be the optimum air pressure in tyres and how often should I check it?

Always keep the vehicle manufacturer’s recommended air pressure in your tyres, including the spare. Check the air pressure in your tyres (including spares) every month and before going on long trips or carrying extra weight. Be sure to use an accurate pressure gauge. Check air pressure when the tyres are ‘cold’. Tyres are considered ‘cold’ when the vehicle has been parked for three hours or more, or if the vehicle has been driven less than a mile (1.6 km) at a moderate speed.

If you have further questions concerning tyre pressure, please contact Technical Services at 1-800-847-3272.

What does ‘speed rating’ mean?

‘Speed rating’ (specified by letters) of a tyre indicates the maximum speed approved for a tyre, based on standardised lab tests. The speed rating system is intended to permit comparison of the speed capabilities of different tyres. When replacing the tyres, consult your vehicle owner’s manual and tyre information placard for recommendations, if any, concerning the use of speed rated tyres.

If you have further questions concerning speed rating, please contact Technical Services at 1-800-847-3272.

What should I do if the cords on my tyres are visible?

If your tyres are damaged or in an unusual condition, have them inspected by a qualified tyre service professional. It may be necessary to have the tyres removed from the rims for a complete inspection.

RUN-FLAT TYRES (RFTs)

How do I identify RFTs?

Firestone Run-Flat Tyres are branded with the RFT logo on the sidewalls, near the rim.

What is the recommended air pressure for RFTs?

Follow your vehicle manufacturer’s recommendation for air pressure settings as indicated on the vehicle tyre information placard and/or in the vehicle owner’s manual. Like other tyres, RFT tyres need proper air pressure maintenance for safe operation and to maximise the tyre’s life and performance. Check the air pressure in your tyres (including spares) every month and before going on long trips or carrying extra weight. Be sure to use an accurate pressure gauge. Check air pressure when the tyres are ‘cold’. Tyres are considered ‘cold’ when the vehicle has been parked for three hours or more, or if the vehicle has been driven less than a mile (1.6 km) at a moderate speed.

Can I mix RFTs and conventional tyres?

Do not replace or mix RFT with conventional tyres, unless on an emergency/temporary basis. Conventional tyres do not have run-flat capability and the handling characteristics of the vehicle with these tyres may be different. If a conventional tyre is used on an emergency/temporary basis, verify that its size, load capacity, air pressure, and speed rating specifications meet the requirements of the vehicle. Replace any conventional tyre with the proper RFT as soon as possible.

Is a Tyre Pressure Monitoring System (TPMS) necessary for use with an RFT?

A functioning Tyre Pressure Monitoring System (TPMS) must be used with your RFT. Because these tyres ride so well even without air pressure, the TPMS may be necessary to alert you about the loss of air pressure. When alerted, follow the instructions in your vehicle owner’s manual.

How far can I drive on Run-Flat Tyres after the Tyre Pressure Monitoring System (TPMS) alert?

Your RFT will be marked on the sidewall with a run-flat or low tyre pressure operating speed of 50 mph (80 km/h). If the sidewall indicates a distance limitation, do not exceed that number. If the sidewall does not specify a distance limitation, consult your vehicle owner’s manual as run-flat or low tyre pressure operating limitations vary by tyre design and vehicle applications. Note that maximum distance values are determined under controlled conditions, which may vary in actual use. Your distance capability may be less, or more, depending on your specific operating conditions. If in doubt, do not exceed the 50-mile (80 km) limitation. Seek tyre service as soon as possible to minimise tyre damage.

Can a puncture in my RFT tyre be repaired?

No tyre, regardless of its design or quality, is indestructible. RFTs can be rendered unusable due to a puncture or other road hazard as well as from improper tyre pressure maintenance. Some punctures may be repaired under certain restrictions and prescribed procedures. In addition to low pressure, the factors affecting ability to repair an RFT include: vehicle speed, load, manoeuvring, the amount of air pressure loss, and ambient temperature. In any situation, the extent and location of a puncture-causing object or other road hazard are also critical factors. Run-Flat Certified Retailers will fully inspect your tyre, inside and out, to determine if the tyre can be repaired. Tyre damage is not always visible from the outside and the tyre must be removed from the wheel for a complete inspection. Note: Some vehicle manufacturers do not recommend using repaired tyres. Consult your vehicle owner’s manual or contact the vehicle manufacturer before operating a vehicle that has a repaired tyre.