WHEELS AND TYRES 467 SUSPENSION 5.3.1 GENERAL INFORMATION TECHNICALSPECIFICATIONS 1. Tyres TATANANO is equipped with tubeless tyres and are designed to operate satisfactorily with recommended loads when inflated to correct pressure. Tyresizeand recommended tyrepressureareas follows: Front : 135/70R12 (26-28 psi / 1.8 - 2.0 kg/cm2) Rear : 155/65R12 (28-30 psi / 1.9 - 2.1 kg/cm2) Spare : 135/70R12 (28-30 psi / 1.9 - 2.1 kg/cm2) Tyre geometry : A tyre of size 135/70R12 is made up of following information : 135 - Tyre section width in millimeters 70 - Aspect ratio in % (the height of the side wall divided by the tyre’s width) R - Tyre’s construction type - in this case it’s a radial type 12 - Rim diameter in inches 2. Wheel Rims Wheel rim sizes are as follows : 4B X 12 stylized steel rim (For Luxury versions) 4B X 12 Regular wheel rim half wheel covers (For Deluxe versions) 4B X 12 Regular wheel rim (For Standard versions) NOTE : 4B X 12 Aluminum alloy rims are available as accessories. 5.3 WHEELS AND TYRES Wheel assembly is an important part of the vehicle. It consists of wheel rim and a tyre. TATA NANO is equipped with tubeless tyre i.e. it does not require a separate tube. Wheel imparts motion to vehicle by rolling friction. Tyre provides traction, braking, steering, and load support. They combinely provide a flexible cushion between the vehicle and the road, which smoothens out shock, and ensure comfortable ride to the occupants. Tyres should be inflated to correct and recommended pressure as it plays an important role to achieve desired functions while driving and handling.
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