Taller tires?
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Senior User
Joined: Aug 2008
Posts: 141
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From: north carolina
Taller tires?
Are right ,correct me if i'm wrong but i've read alot of treads in here and some of the sollutions for our series trucks for high reving on the highway is too install taller tires.Knowing that it brings the rpm's down,does or does not this reflect on the correct mph?so i think installing taller tires brings the rpm's down, it would mean your going slower or faster from before?so if your going slower that would mean you would have to bring up the mph,bringing your rpm's back to were ya started.or the oposite.
Elder User
Joined: Jan 2004
Posts: 731
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From: in the springs
opposite taller tire means more outer surface area so less revolutions of the tire to go the same distance. The speedo will not read acurately. Mine has not worked for more than a month at a time for the last 15 years so i just always drove by feel and the tach.
Junior User
Joined: Mar 2008
Posts: 62
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From: Southern WA
What was your lift to fit the 32" tires? Your truck looks great. Not to tall, not too short.
Thanks!
BS
Senior User
Joined: Feb 2009
Posts: 160
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Big Skier, thanks, put a 4" lift to make it look right, the 32's fit without a lift but just didn't look right.
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Hotshot
Joined: Oct 2002
Posts: 18,488
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From: The Big, Oregon
I'm running 285/75R16s on the back of my F250, basically 33s, no lift and it's a 2wd. The front has 235/85r16s, clears them without any issues at all.
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Fleet Mechanic
Joined: Dec 2006
Posts: 1,338
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From: UPSTATE NY
this is way too confusing! all i can say is i'm a motorcycle stuntrider by hobby and a smaller back sprocket will give you more top end and a bigger back sprocket will reduce your top speed but give you insane torque. i would have to believe tires are the same principle because a wheel is basically a gear or pulley just in a different form. and every gear or pulley system i have ever seen works the same. smaller input drive pulley= less speed, more torque, more rpm from the motor. larger input drive pulley= more speed, less torque, less rpm from the motor. and a smaller final drive pulley = more speed, less torque, less rpm . a larger final drive pulley = less speed, more torque, more rpm from the motor. okay now i have a splitting headache
Senior User
Joined: Dec 2002
Posts: 473
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From: SW Florida
Try to think of the smaller sprocket being the same as a bigger tire and the bigger sprocket being a smaller tire. With your truck you aren't making the drive gear bigger or smaller, you're changing the tire size.
Another way to think about it is how far the truck will move when a tire spins one rotation. The small tire won't move the truck as far as the big tire, even though both only spin one rotation. The engine only knows it spins the tire one rotation so bigger tire = more distance covered.
Another way to think about it is how far the truck will move when a tire spins one rotation. The small tire won't move the truck as far as the big tire, even though both only spin one rotation. The engine only knows it spins the tire one rotation so bigger tire = more distance covered.
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