How to change tire size?

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Nelsonc
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Joined: Sat Sep 15, 2012 11:53 pm

How to change tire size?

Post by Nelsonc »

I just got my tuner and I can't figure out how to change my tire size I see where it asks about tire RPM but how do I figure out that? i got 35x12.5r17 if any one can walk me through this would be great. :lol: i googled it and could not find any thing :crashing:
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mikel
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Re: How to change tire size?

Post by mikel »

what vehicle?
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Nelsonc
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Re: How to change tire size?

Post by Nelsonc »

2004 f-150 fx4
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mikel
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Re: How to change tire size?

Post by mikel »

pick the tune, then select the option to modify the tune, then go to tire size or axle ratio and you'll see a revs per mile setting to adjust for your tires.
make the change, then go back until it asks if you wish to install the tune, and choose yes.
Mike Litsch
DiabloSport Brand Manager
Diablo Tech support by phone:
561-908-0040
M-F 8:00 AM to 5:00 PM EST

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Nelsonc
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Joined: Sat Sep 15, 2012 11:53 pm

Re: How to change tire size?

Post by Nelsonc »

How do I figure out the tire revs? I got 35x12.5r17 on a 2004 ford f-150 fx4 that is my question I have asked lots of people no one knows how to do it :blowup:
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Oldsaltydog
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Re: How to change tire size?

Post by Oldsaltydog »

Usually therevs are on the manufacturer web site if not google it there are a number of sites that have tire calculators
Oldsaltydog
2010 silverado cc
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mikel
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Re: How to change tire size?

Post by mikel »

20168/height in inches
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price2757
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Joined: Mon Jul 30, 2012 11:49 pm

Re: How to change tire size?

Post by price2757 »

I know this is a dumb question, but in figuring Tire revs per mile, I know you use tire height, but do you use actual tire height or round up or down if your tire height is, say, 33.5 inches? :normal:
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