Search results
Results from the WOW.Com Content Network
Prior to 1964, tires were all made to a 90% aspect ratio. Tire size was specified as the tire width in inches and the diameter in inches – for example, 6.50-15. [29] From 1965 to the early 1970s, tires were made to an 80% aspect ratio. Tire size was again specified by width in inches and diameter in inches.
Modern road tires have several measurements associated with their size as specified by tire codes like 225/70R14. The first number in the code (e.g., "225") represents the nominal tire width in millimeters. This is followed by the aspect ratio (e.g.,"70"), which is the height of the sidewall expressed as a percentage of the nominal tire width.
[9] The automotive engineering group of the mechanical engineering department at Clemson University is developing a low energy loss airless tire with Michelin through the NIST ATP project. Resilient Technologies and the University of Wisconsin–Madison's Polymer Engineering Center are creating a "non-pneumatic tire", which is a round polymeric ...
The first drag racing slick was developed by M&H Tires (Marvin & Harry Tires) in the early 1950s. It was the only company in the world that produced and sold original drag racing tyres. Drag racing slicks vary in size, from slicks used on motorcycles to very wide ones used on "top fuel" dragsters.
The Reinalt-Thomas Corporation, doing business as Discount Tire and America's Tire, is an American tire and wheel retailer. It operates in 38 of the lower 48 states, and headquartered in Scottsdale, Arizona. Founded in 1960, it is considered the largest independent retailer of tires and wheels in the world. [1] [2]
The tires have dimensions of 275/30ZR20 at the front and 345/25ZR21 at the rear, and the Z07 Performance Package comes standard with Michelin Cup 2 R ZP performance tires. [44] Chevrolet claims that the optional carbon fiber wheels, supplied by Australian manufacturer Carbon Revolution, [ 45 ] shave off 41 lb (19 kg) of unsprung weight .
So a Michelin Harmony tire rated at 9.45 RRF at 1000 pounds load would be .0095 RRC. [ 4 ] [ 5 ] In the early 2010s in Canada , Transport Canada tests were planned on a number of different tires mounted on 15 and 16-inch rims – the most common tire sizes in Canada at that time – to determine how rolling resistance is influenced by vehicle ...
In 2010, the front tyres were narrowed from 270 mm (11 in) to 245 mm (9.6 in), in order to improve the balance of grip between the front and rear. [20] In 2011, with the sole tyre supplier having been changed from Bridgestone to Pirelli, [ 21 ] the rules were the same as the 2010 season rules concerning the tyres.