Originally Posted by FordTough2007
wait.. first.. your yelling us that your factory tires were 28 inches tall? its an edge right? that doesnt seem possible.. my factory tires on my sport wer like 30-31... also.. why were you going 90 in a ranger. they suck at 75.. also search before posting a question thats been aske 90000 times
Before we even leave the blocks let's get on the same page, Partner...I never asked any question nor did I ever claim to have pushed my truck over 85...and that was with stock tires.
First off, I was NOT yelling at anyone. Nor did I use any words that could possibly be construed as being derogatory. My exclamation was a reaction to the idea that anyone would push a Ranger to the limits claimed. And my words were something to the effect I had pushed my truck to 85 only a time or two..
Second, the stock tires (as per the sticker on the door jamb) were 235/75/15's. By my calculations those numbers work out to describe a tire that is nine and one quarter inches wide and just a hair over twenty eight inches tall. Now those are Ford specifications for my truck, a 2002 Ranger with the Edge package.
I replaced my stock tires with 31X10.50X15's. That makes the tires I have now three inches taller than stock. Now, according to my mathematical calculations (and I freely admit I'm no Rhodes Scholar) the stock tires being 90% of the height of the tires I have now gives a speedometer error of 10% (i.e., my speedometer is indicating only 90% of my actual speed). Therefore, in a perfect world, when my speedometer reads 70 MPH, my actual speed is 77 MPH. When GPS tells me I am running 80 my speedometer reads just under 72 MPH. I suspect the fact that my speedometer reads just a little over the 10% figure I eluded to earlier is due to the tires growing a fraction of an inch due to centrifugal force acting on my tires at highway speeds.
I apologize if my post was mis-construed...I assure you that was not my intention to seem like I was making remarks that chastised anyone...ANYONE.
So perhaps it might be you that is misreading the posts in this forum.
Hope you had a nice Thanksgiving and I hope you have a nice day.