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Old 02-22-2018, 04:40 PM   #23 (permalink)
Piwoslaw
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Join Date: Oct 2008
Location: Warsaw, Poland
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Svietlana II - '13 Peugeot 308SW e-HDI 6sp
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Quote:
Originally Posted by gumby79 View Post
The reason for running the ultra stiff sidewall run-flat style Tire is to delete the weight of a spare tire.
Sorry to go OT, but this got me thinking: For the sidewall to be stronger it also becomes heavier, right?

If yes, then this adds rotational mass to the wheel, increasing fuel consumption during each acceleration. When multiplied by 4 and added up over the life of the tire, or the car, does this still justify the saved mass of the spare tire?

Also, heavier tires add unsprung weight, which reduces comfort.
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[Old] Piwoslaw's Peugeot 307sw modding thread
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