Crash.Net User: benignlyindifferent

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benignlyindifferent

August 04, 2014 5:52 PM

F1 » Hembery: Pirelli focusing on 19-inch tyres not 18-inch


Low profile tires save weight as the cast wheel is almost always lighter than the rubber sidewall replaced. The sidewall flex is largely eliminated and replaced by suspension components. this is why high performance sports cars use very low profile tires. Added advantages include more precise suspension tuning, the ability to control compression and rebound rates (sidewall flex is constant), and a significantly increased interior volume inside the wheel to contain braking and energy regenerative systems. 18 or 19 inch does not matter much but the move to low profile tires is long overdue. The possibility of dramatically increasing mechanical grip will possibly allow F1 to dramatically reduce the aero grip and this will be good for racing.

benignlyindifferent

August 04, 2014 9:20 PM

F1 » Hembery: Pirelli focusing on 19-inch tyres not 18-inch


Vincero, I cannot disagree. While I do think they would be lighter I also believe the weight savings would be insignificant. I think the significant advantage to be gained would be the much stiffer sidewall and that teams could better tune suspension sates, including compression and rebound, which are two main reasons why active suspension remains so attractive.

benignlyindifferent

August 04, 2014 7:26 PM

F1 » Hembery: Pirelli focusing on 19-inch tyres not 18-inch


Hmm, a few questions/concerns with my comment. It is true that F1 has not evolved tire size for a considerable number of years. Different theories as to why, when virtually all the sports club categories have gone low profile for the reasons I mention, but one reason I recall was to limit the size of the brakes. F1 then went out and developed carbon fibre brakes, eliminating that restriction. Lighter? Yes, in most cases. However, we are not speaking of light cast alloy wheels where the weight savings may be marginal but we are talking about forged allow wheels that can be made lighter than rubber sidewall they would replace in a 13 inch tire.... (next comment)

benignlyindifferent

August 04, 2014 11:22 PM

F1 » Hembery: Pirelli focusing on 19-inch tyres not 18-inch


We live in a world of increasing wheel sizes because of the performance characteristics that a low profile tire can deliver. My Infiniti Q50 has 17 inch wheels and the sport version has 19 inch wheels. The Audi R18 has 18 inch wheels. Another benefit to low profile tires not mentioned earlier is that they are less prone to dramatic swings in tire temperatures that the higher volume balloon tires experience. Like them or not, they are coming to F1 soon and if the racing is good, or not, the tires will not be the major reason.


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