Alternative tires
Joined: Mar 2009
Posts: 18,299
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From: By the sea, Tx
G35 sedan w/ too much money in mods
Cool, I'm on the same page. So if the rear tire is drastically larger than the front it will effect VDC as well? Using your example of 5.78%.
I know having a smaller rear tire (aesthetics aside) is not good because it tricks the computer into thinking that the rear tire is slipping due to it spinning faster than the front. I have never ventured that far (rear more than 3% larger).
And yes anyone with experience please chime in, this is a good learning experience for all.
well i thought it was from oem specs. for example. befor ei got my oem rays 19s, i had sport 07+ sedan rims (18in rims) the frons were 50s and the rears were 45s. i checked before in the calculator and it was within 3% but my VDC was going crazy with that set up. so which is why i thought 3% from OEM Settings.
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Joined: Aug 2010
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From: soul-cal!
^^I think 4D is correct. From what I've read factory diameters aren't the guide, it's the difference between the rolling diameter of the front and rear tires.
This link has a great calculator where you plug in the different tire sizes and it will spit out the specs for comparison and actually also create an image comparing the 2 sizes. http://www.miata.net/garage/tirecalc.html
This link has a great calculator where you plug in the different tire sizes and it will spit out the specs for comparison and actually also create an image comparing the 2 sizes. http://www.miata.net/garage/tirecalc.html
from what you guys are telling me, this would be alright. What I was originally wondering though was if it was alright to put the 245/35 on the front and rear which is .5 wider
thanks so much everyone for bearing with me. I know it could be stressful explaining everything to someone so inexperienced, but I am learning so much
Last edited by d0nutboii; May 27, 2011 at 06:06 PM.
Joined: Mar 2009
Posts: 18,299
Likes: 1,488
From: By the sea, Tx
G35 sedan w/ too much money in mods
You learn quickly grasshopper. 
Your example is correct, that combination shouldn't give the VDC issues. And yes it would be perfectly fine to run 245/35 all around.
Your example is correct, that combination shouldn't give the VDC issues. And yes it would be perfectly fine to run 245/35 all around.
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Sep 19, 2015 09:04 PM