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Joe Sprint Bros · 10-09-2007, 04:25 PM

I agree with Myron, using blocks and starting at low press, increase and measure blocks. My experience showed the 28's reached a point of diminishing returns, as the sidewalls began to expand instead of circumference. You should also notice a "sweet spot" where pressure doesn't change the blocks much, important for consistency. Running 20 psi instead of 35 reduced vehicle reaction time .02-.03 and didn't seem to have effect on mph. Other cars may react differently.. Joe.

10-09-2007, 04:25 PM	#8
Joe Sprint Bros Junior Member Join Date: Nov 2004 Location: Virginia, USA Posts: 46 Likes: 0 Liked 0 Times in 0 Posts	Re: 27" to 28" front tire swap I agree with Myron, using blocks and starting at low press, increase and measure blocks. My experience showed the 28's reached a point of diminishing returns, as the sidewalls began to expand instead of circumference. You should also notice a "sweet spot" where pressure doesn't change the blocks much, important for consistency. Running 20 psi instead of 35 reduced vehicle reaction time .02-.03 and didn't seem to have effect on mph. Other cars may react differently.. Joe.