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Front to Rear tire size ratio's
1st off I'm assuming that the wheel sensor disks are all the same size. The oem fronts are 21" tall and the oem rear is 23" tall. I know there are a few out there who have gone wild with tires, but am curious what size F/R combination you have.. Right now I have a set of 195/65/14 for the front and a 225/50/15 for the rear. They are both 24" tall I'm getting faults DPS/ABS.. OBTW, these are automotive tires.. If anyone has managed to complete this task I would appreciate a bit of info to head me in the right direction..
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Those front 195s are just way too tall...
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Front to Rear tire size ratio's
195 is the width of the tire...
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Originally Posted by tigerdr
195 is the width of the tire...
I believe he was refering to the original post that the tire is 24" tall mounted, where as the oem is only 21"..
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The Spyder compares front and rear wheel rotational speeds to know to activate the traction control. When you change the front to rear ratio you upset the programmed parameters, and Miss Nanny gets a tummy ache. Your only option is to change the tire sizes to get the ratio back to a point that the VCM programming accepts. I don't think it has much leeway. You rear tire has to be bigger or your fronts smaller. There is really no workaround.
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If you want to play around with tire sizes...
http://www.tacomaworld.com/forum/tirecalc.php
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Originally Posted by Bob Denman
Thanks that really helped... I believe I can make all the tires work, just gotta go find a used tire to place on the rear before spending another butt-load on a new tire I can't use.. I can always use the 195's for the trailer..
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So would a 175/65r14 work on front, the 165 is hard to find in mid missouri?
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Bump..!!
2012 RS sm5 , 998cc V-Twin 106hp DIY brake and park brake Classic Black
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tire height
So if I'm thinking right if the second number is the height and stock is 65r then if you get a car tire 65r they would be the same correct or not?
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Front to Rear tire size ratio's
Originally Posted by Spyderal11
So would a 175/65r14 work on front, the 165 is hard to find in mid missouri?
Try to find 175/55R15. There are many tire available in that size. It's only 0.4 in difference in width.
Last edited by tigerdr; 04-05-2014 at 01:02 PM.
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Originally Posted by Spyderal11
So if I'm thinking right if the second number is the height and stock is 65r then if you get a car tire 65r they would be the same correct or not?
No, the second number is the aspect ratio, the percentage of the width that the section is tall. It is no a direct measurement.
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Scotty
would the 175/65r work in your opinion?
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Originally Posted by Spyderal11
would the 175/65r work in your opinion?
I wouldn't venture a guess. There are too many variables in tire selection. Besides a size that will work with the nanny and fit inside the fenders, you have to consider speed rating, wet and dry traction, and ability to shed water to prevent hydroplaning. In addition you have to consider how things may change as the tire wears. The sidewall flex is important, too. Your best bet is to pick a tire with a size that is close to stock, then look at all the other factors involved. In regard to final fit only purchasing the tire and trying it, seeing it on another machine at an event like Spyderfest, or researching it here can tell the story. I can't tell it because I use OEM tires.
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