Tyres should be stored in a cool, dry and dark place away from direct sunlight (suggested storage temperature 25°C ± 5°C). Avoid storing tyres in an area which is wet, oily, or greasy.
Recommended width of the wheel as specified to be used for optimum performance. However, from the original specified rim width ±0.5" can also be used. ETRTO/JATMA standards can be referred for the correct rim width.
Mounting and demounting should be done by trained personnel using a suitable mounting machine. Prior to fitment, inspect the rim and tyre for any external damage. Tyres have to be mounted according to the direction and rotation specified on the sidewall. The rim seating area and tyre beads should be lubricated. Recommended tyre pressures to be followed. Check for proper seating of the beads and tyre centring with reference to RCR (rim centre ring) after inflation. Balancing of the tyres must be done.
Directional pattern tyres must be used on the correct side. Left or right and outer side markings on the sidewall must be followed for best performance.
Groove width between the pattern blocks can be widened if required. However, hand cutting the buttons could alter the performance, hence a careful decision is to be made based on the terrain conditions.
Rally tyre and racing tyre compounds are designed for different applications, usage, weather conditions and track temperatures. Compound hardness is identified by SS (super soft compound), S (soft compound), M (medium compound), H (hard compound), and W (wet compound).
Compound | Track Surface | Conditions | Track Temperature (°C) | |||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Hardness | Working Temp. (°C) |
Mud/ Slush |
Soft/ Sand |
Medium/ Packed |
Hard/ Rocky |
Wet | Damp | Dry | -5 | 0 | 5 | 10 | 15 | 25 | 30 | 35 | 40+ | |||||||
Soft (S) | 25-80 | |||||||||||||||||||||||
Medium (M) | 60-110 | |||||||||||||||||||||||
Hard (H) | 70-120 | |||||||||||||||||||||||
Wet (W) | 20-90 |
Compound | Track Surface | Conditions | Track Temperature (°C) | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Hardness | Working Temp. (°C) |
Smooth | Medium | Rough | Wet | Damp | Dry | -5 | 0 | 5 | 10 | 20 | 25 | 30 | 35 | 40+ | ||||||
Super soft (SS) | 25-80 | |||||||||||||||||||||
Soft (S) | 40-90 | |||||||||||||||||||||
Medium (M) | 50-110 | |||||||||||||||||||||
Hard (H) | 80-130 | |||||||||||||||||||||
Wet (W) | 20-90 |
MRF Motorsport tyres contain high performance rubber compounds and require special treatment when exposed to low temperatures (below 50°C). At these temperatures the tyre has reduced flexibility which can result in cracking of the compound if the tyre is not handled correctly.
In order to avoid damage to the compound at low temperatures, please follow the instructions below:
MRF Limited makes NO WARRANTIES WHATSOEVER, EXPRESS, IMPLIED OR STATUTORY, INCLUDING WITHOUT LIMITATION ANY IMPLIED WARRANTIES OF MERCHANTABILITY OF FITNESS FOR A PARTICULAR PURPOSE for its racing or competition tyres. MRF EXPRESSLY DISCLAIMS ALL SUCH WARRANTIES. In no event shall MRF be liable for any kind of general, special, direct, indirect or consequential damages including loss of profits, personal injury etc. arising from the use of its racing or competition tyres. All MRF racing a competition tyres are sold AS IS WHERE IS. Purchasers and users ASSUME ALL RISKS associated with the use of MRF racing and competition tyres.
NEVER USE RACING OR COMPETITION TYRES NOT BEARING THE "E" MARK (OR ANY OTHER LEGAL REQUIREMENT IN THE COUNTRY OF USE) ON PUBLIC STREETS OR HIGHWAYS: IT IS ILLEGAL AND DANGEROUS. NEVER USE A RACING OR COMPETITION TYRE ON PUBLIC STREETS OR HIGHWAYS WHICH HAS BRANDING ON ITS SIDEWALL "Not for Highway Use" OR "For Competition Purpose": IT IS ILLEGAL AND DANGEROUS. MRF RACING and COMPETITION TYRES WHICH ARE NOT MEANT FOR ORDINARY ROAD USE AND DO NOT BEAR AN "E" MARK ARE DESIGNED AND COMPOUNDED EXCLUSIVELY FOR COMPETITION USE ONLY. These tyres are NOT tested, labelled or intended to meet FMVSS 109/119 or ECE 30/75.
Sellers, purchasers and users of MRF racing and competition tyres agree to defend, indemnify and hold harmless MRF Ltd., its officials and business associates, from every type of risk, loss, injury, damage, legal proceedings or whatever kind of nature, which MRF Ltd. may incur or suffer as a result of the improper sale, installation or use of MRF racing and competition tyres.
Any dispute with regard to this warranty/exclusion of warranty and claims if any, against the products shall be exclusively governed by the laws of the Republic of India, and subject to the exclusive jurisdiction of the courts in Chennai, India.