Front Tire Height

March 18, 2023, 09:03 PM

joe Diry

Front Tire Height

Currently running a 23.5” tire on a spindle. Anybody have experience if I were to change to a 24.5” tire if there is any MPH or ET to gain? The larger tire should have a lower rolling resistance. Car goes ~175 mph.

March 19, 2023, 07:20 AM

Curly1

It would not make a very big change at all. Would change reaction time some, ET just a little and Probably not even be able to tell any MPH difference.

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March 21, 2023, 07:20 PM

Mike Allred

I went from a 23” to 29” and was surprised how little the reaction time was affected. My footbrake truck does yank the tires into the air pretty quickly with a 15.3 SLR (2.48 X 6.17 gear on 33” tall big tire).

March 22, 2023, 07:30 AM

Curly1

quote:
Originally posted by Mike Allred:
I went from a 23” to 29” and was surprised how little the reaction time was affected. My footbrake truck does yank the tires into the air pretty quickly with a 15.3 SLR (2.48 X 6.17 gear on 33” tall big tire).

And much of that can be controlled with front tire pressure.