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Originally Posted by Winfield1990
I would worry more about tire weight for unsprung weight than LRR
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Unsprung weight certainly is an issue.
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there is alot more slip from having LRR and less traction while accelerating
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Then you're giving it too much throttle, or the tyres are shot.
Even my lowly 109HP FWD car would spin its rather sporty Continental Sportcontact 3 tyres when I was too enthusiastic with throttle and clutch.
Surely it can spin its LRR too ...
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and you have to slow down more on turns,
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While hypermiling, one is often already going slower.
Of course the LRR tyres don't corner as well as a sportstyre, but the newer / better ones are perfectly driveable.
I often have other cars right up my tail on the exit ramp from the highway as I coast to bleed off speed. They tend to quickly fall behind once we get into the bends off the exit ramp - often a 90° to 180° turn - as I generally don't brake to turn in, while they do.
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and your breaking and performance are sacraficed
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Hypermiling means you're not exactly going for performance, so that doesn't really matter.
Braking with a good LRR tyre is OK, though obviously not as good as a sportstyre, and it really isn't expected to be as good anyway.
You can't expect sportstyre handling and braking from a LRR tyre - nor from a regular run-of-the-mill tyre either. But you pay for the better handling & braking as you wear them down a lot faster and use more fuel doing so.
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Biggest question is what speeds do you normally coast through turns?....
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"Normal" speed is irrelevant as you need to consider all aspects of every different turn.
In order to keep up the momentum, I tend to go faster through turns on LRR tyres than many people on whatever they are driving.
That includes the local Johnnys and cars with twice or more the HP.