StressedDave wrote:
Larger contact patch area = marginally more grip
If the car weighs the same?
Please explain Dave. Sorry for the stupid question.
StressedDave wrote:
Larger contact patch area = marginally more grip
Renny wrote:The lack of a Low box is one of the reasons I don't like the Freelander. HDC is good, but you still don't have enough control at very low speeds without abusing the clutch.
manilva15b wrote:Renny wrote:The lack of a Low box is one of the reasons I don't like the Freelander. HDC is good, but you still don't have enough control at very low speeds without abusing the clutch.
I'd quite forgotten about the Frelander clutch - not so much a safety issue though. The company had a fleet of 17 from new, 3 of which we managed to burn out the clutches on - the clutch seemed hopelessly underengineered for the demands placed on them in a 2 tonne car. Reversing up a modest gradient was guaranteed to fill the cabin with clutch fumes. Maybe that is a safety issue after all?
AdamW wrote:StressedDave wrote:
Larger contact patch area = marginally more grip
If the car weighs the same?
Please explain Dave. Sorry for the stupid question.
Gromit37 wrote:While many young drivers add bigger alloy wheels with greater width to replace small steel wheels, is there a big enough reduction in rotating mass to warrant the expense?
Gromit37 wrote:This is probably Stressed Daves realm of expertise...
The question is, does a 20% increase in rubber give a proportional increase in grip, or is it not as simple as that? On top of that, all other things being equal, increased friction = increased rolling resistance = bigger fuel bill?
I also have a question with regard to rotating mass and performance. While many young drivers add bigger alloy wheels with greater width to replace small steel wheels, is there a big enough reduction in rotating mass to warrant the expense?
Renny wrote:Many lightweight high performance cars suffer badly when "over-tyred".
Big Err wrote:Another issue with this has been demonstrated in the office here as one of our admin people who has a MG ZR has discovered the cost of replacing the 205/45/17 Z tyres, so has opted for a budget make.
Gromit37 wrote:This is probably Stressed Daves realm of expertise...
The question is, does a 20% increase in rubber give a proportional increase in grip, or is it not as simple as that? On top of that, all other things being equal, increased friction = increased rolling resistance = bigger fuel bill?
I also have a question with regard to rotating mass and performance. While many young drivers add bigger alloy wheels with greater width to replace small steel wheels, is there a big enough reduction in rotating mass to warrant the expense?
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