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Posted by Paul(in NY) [12.64.108.78] on Thursday, July 07, 2011 at 19:42:49 :
In Reply to: Re: I was going diesel so figured i needed higher gears. posted by mannyc [173.77.206.116] on Thursday, July 07, 2011 at 19:00:02 :
I do not support the concept of increasing tire size to 1100x16 to get better road performance. The 900x16 tires were the largest size used in the PW engineering design/build. Going with larger tires add more stress on all parts of the front steering axle, including actual braking ability.
When we go with larger tires, we knowingly add a lot more weight to the Unsprung Mass. If you dont understand what adding weight to the Unsprung Mass equates to your performance/handling, read this, it saves me a lot of typing;
http://en.wikipedia.org/wiki/Unsprung_mass
By staying with 4.89 ring and pinions in the 3rd member and using 900x16 tires, we get good roadability with the 230/251 engine and keep the Unsprung Mass as light as possible.
Further, you may if lucky, find a nice wear matched set of used 1100x16 tires. Now destroy a tire and try to find a good used tire with equivalent wear quickly and at a price you want to pay, with shipping from who knows where.
And if you do go with a Diesel, 4.89's and 900x16 tires is a nice combination. I run this combo on all my Cummins powered old iron.
Paul
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