Motorcycle tyre
[3] Pneumatic tyres were invented by John Boyd Dunlop in 1888, and were in widespread use on bicycles and some early motorcycle prototypes by 1895.
[6] In the period 1956–1964, typical tyre grip increased by 40%, resulting in better cornering, shorter stopping distance and overall improved safety.
[6] Both natural and synthetic rubber were used, and tyres included fibres of cotton, nylon, and rayon for various structural benefits.
[8] Racer John Surtees had been hanging off his MV Agusta as far back as the 1950s, in spite of resistance to the practice at that time from other riders, saying, "The idea is to keep the machine as upright as possible for maximum traction.
"[9] Tyres of the 1960s and early 1970s had a rounder profile, but as they grew in width from the mid-1970s, the cross section became more oval, and the greater width of the tyre meant the contact patch was further off centre, increasing either steering effort or turn radius, at a given lean angle and speed, than it would have been with a rounder profile.
[8] The first radial tyres for cars appeared in 1943,[10] but motorcyclists waited forty more years for this technology to come to motorcycles.
These were the 1983 Pirelli MP7 radials, introduced on the European version of the 1984 Honda VF1000R, a limited edition exotic motorcycle that showcased a number of new technologies including carbon fibre reinforced bodywork and air-adjustable anti-dive front forks.
[11][12] The new radial tyres had to provide race-replica handling for the very heavy 238 kg (524 lb) dry weight chassis, up to a top speed of 240 km/h (150 mph), making it the fastest production motorcycle of its day.
[14] Márquez was working to use to best advantage the characteristics of the spec Bridgestone tyres all teams had been assigned since 2011, moving off center to keep the bike as upright as possible in the corner apex, and off the relatively flexible edge of tread area.
[14] To keep pace, other riders had to learn this physically demanding maneuver, requiring practice to change body position smoothly without upsetting the bike, a properly set up suspension keyed for this style of riding, and targeted muscle development to hold body position.
Sport Touring tyres are generally not used for high cornering loads, but for long straights, good for riding across the country.
They may last longer, but they tend to provide less outright grip than sports tyres at optimal operating temperatures.
Most road bike manufacturers now specify these dual compound tyres as standard equipment due to their proven performance advantage.
B: Continuous, one-piece, or open-end inner tube assembly, where first a joint is made where one end slips into the other, with the collar member forced out tightly against the inner face of the retaining member.
C: A butt-end tube, where the tapered, closed end fits into the open end, expanding to seal when inflated. [ 7 ]
