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Old 05-02-2012, 01:38 PM   #1
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Retune for wider tires?

Is a retune required for getting a wider tire size on all four corners? Car is 2011 5.0 and stock tires were 255/40/19 and now I'm running 275/40/19. Would I need a tune on this or no? I spoke to bama and one guy said yes and another said no. Now I'm confused. Lol.
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Old 05-02-2012, 01:53 PM   #2
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Quote:
Originally Posted by BossFiveOh
Is a retune required for getting a wider tire size on all four corners? Car is 2011 5.0 and stock tires were 255/40/19 and now I'm running 275/40/19. Would I need a tune on this or no? I spoke to bama and one guy said yes and another said no. Now I'm confused. Lol.
No!.. The only time you would need to retune due to tires, is if you change the diameter size!.. But just for width then no!...
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Old 05-02-2012, 01:58 PM   #3
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Originally Posted by Eturner

No!.. The only time you would need to retune due to tires, is if you change the diameter size!.. But just for width then no!...
Ok cool. Thanks for the quick response!

---------- Post added at 12:58 PM ---------- Previous post was at 12:58 PM ----------

Quote:
Originally Posted by Eturner

No!.. The only time you would need to retune due to tires, is if you change the diameter size!.. But just for width then no!...
Ok cool. Thanks for the quick response.
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Old 05-02-2012, 02:02 PM   #4
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Originally Posted by BossFiveOh

Ok cool. Thanks for the quick response!

---------- Post added at 12:58 PM ---------- Previous post was at 12:58 PM ----------



Ok cool. Thanks for the quick response.
No problem!...
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Old 05-02-2012, 04:03 PM   #5
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Re: Retune for wider tires?

255/40 and 275/40 would be different diameters ...

So the answer to your question is two-fold. No, you do not need a retune for wider tires, but you will need a retune for the tires you are switching to.

Also, "need" is a relative term since it would just result in your speedo being off by a bit.
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Old 05-02-2012, 04:06 PM   #6
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^^^^ dead on
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Old 05-02-2012, 04:27 PM   #7
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Im sorry but im in the same place regarding the new rims on mine too..mine its a 04 cobra and im putting 10.5 inch on the rears 315 35 17 would i need to retune it also..any help...
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Old 05-02-2012, 04:31 PM   #8
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Originally Posted by Elcobrachingom
Im sorry but im in the same place regarding the new rims on mine too..mine its a 04 cobra and im putting 10.5 inch on the rears 315 35 17 would i need to retune it also..any help...
No you dont need to, yes its recommended
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