14 inch wheels ?

How do 14" wheels lead to a more comfortable ride compared to 15" wheels?

Don
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1970 911T
2006 Cayman S

The tire was taller on 14" wheels giving a little more shock absorbing in the tire.

Back 1969 a Car & Driver tested a 911T with 185HR14 tires against a 911E and 811S with 185/70VR15 tires.

• The nominal sidewall height for the 185/70VR15 was 70% of 185 mm = 129.5 mm or 5.1 inches
• The nominal sidewall height for the 185HR14 should have been at lest 80% of 185 mm = 148 mm or 5.82 inches.

The 14" wheel tire would have had ~ 14% more tire height to "give" going over bumps. I think--given equal tire pressures--the 14" tire would have been about 14% "softer."

Quote:

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Originally Posted by NeunElf

The tire was taller on 14" wheels giving a little more shock absorbing in the tire.

Back 1969 a Car & Driver tested a 911T with 185HR14 tires against a 911E and 811S with 185/70VR15 tires.

• The nominal sidewall height for the 185/70VR15 was 70% of 185 mm = 129.5 mm or 5.1 inches
• The nominal sidewall height for the 185HR14 should have been at lest 80% of 185 mm = 148 mm or 5.82 inches.

The 14" wheel tire would have had ~ 14% more tire height to "give" going over bumps. I think--given equal tire pressures--the 14" tire would have been about 14% "softer."

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Well presented explanation,thanks