front tire change and possible Nanny issue 2015 rts

[bikerjays]

Will there be an issue with the nanny, limp mode or error codes if one changes the front tires to 185 55R15? The tire diameter and circumference are different from the 165 55R15 std kenda. bikerjays

[irvin48]

are they going to fit in the fenderwell?

[KX5062]

It should not cause any nanny issues. The change is relatively minor and I've never read about the nanny being smart enough to distinguish tire sizes.

[GearHd]

The issue is the rollout distance between the front and rear tires. Excessive rollout difference between the front and rear tires could throw nanny into a tailspin. The actual tire size numbers don't mean much seeing all tires actually measure different, it's the actual circumference that matters.

[taxmyzer]

The 185 55R15's please report back with your results. The main issue with using different size tire is limited space under fenders. Good luck!

[SPYD3R]

I'VE RUN THE 175/55 R15 ON BOTH MY RS AND NOW ON MY F3 WITH NO ISSUES....

i don't know which fenders you have, but on my F3, the 175's come really close to the inside edge of the fenders... you may want to speak with your tire dealer and ask him/her if the tires rub, can you return them...
as for the NANNY.... not to worry, the 175 or 185 vs. the 165, are only wider... NANNY may get upset if you go to a shorter/taller tire, that's where the 55 rating comes in, however, i think you'd need to really go way over to upset her....
check it all out here: https://www.tacomaworld.com/tirecalc plug in the OEM size, the below the size you'd like to install... the chart will show you what's different between the two sellections....
btw; go Unidirectionals if you can... mine are the HANKOOK Ventus V4 ES 175/55 R15....
good luck...
SPYD3R

[Bob Denman]

:agree: with Irv: this might be more about fender clearance, than Nanny. :dontknow:
When in doubt; don't do it. nojoke

[Highwayman2013]

It's only a 3.9% difference, you should be fine.