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Old 01-03-2016, 05:14 AM   #1
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Things that make me go huh ?

Recently I switched my 18`s BFG T/A TWR for the winter set 17 Blizzaks. I know the BFG`s are noisy but I do like the grip. But when I switch to the 17 even being a snow tire the ride is different. I know contact patch etc tread but the car itself feels different. Engine does`nt work as hard. I don`t track anymore not that I would turn down some free lapping .My guess is the geometry of the car was designed for 17`s. I need new summers and I`m seriously thinking of going 17`s. Anyone else done or considered this ?
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Old 01-03-2016, 06:20 AM   #2
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More air in tires and more sidewall results in smoother more compliant ride. Greater slip before tire breaks loose. Lots of good things with 17s. I have a 3.6 monster and I love my 17s.
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Old 01-03-2016, 12:34 PM   #3
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Generally speaking, the 17" wheel / tyre combination is lighter weight than the average 18" combo (unless you go forged, high cost wheels). That lighter weight really contributes to better acceleration, more accurate turn in & better mid speed response from the engine as its turning less reciprocating weight. And the suspension is not working as hard too, responding better due to less mass.
A little like comparing a lightweight flywheel / clutch assembly versus the standard items.

I cycled competitively for many years and the old adage was that saving an ounce on your wheels was equivalent to saving a pound on your frame. I don't think that formulae has changed.....
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Old 01-05-2016, 03:50 AM   #4
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Yes the reduction of unsprung weight is a huge plus.
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