I know this may sound like a noob question so please bear with me. I changed the wheel on my 2013 Wrangler Sport (manual trans) from the 225/75R16 to the Sahara's 255/70R18, but now my speedometer reads low by about 8 km/hr. I know there is a fix using some sort of programmable modual but will it hurt anything on the engine / tranny to drive it like this for now?


Thanks a lot guys for the help!!

 

No problem. You'll be fine.

Nick

 

No harm, your speedo will just be off. Pick up a Procal and problem solved.

 

My speedo has been off since 2010..it's about 3-4mph slow....only reason I'm getting a procal now is because I got a no limits disco and don't want the dash light on lol

U won't damage anything.... Just remember that it's off when ur near cops.... Don't want any tickets!

 

Thanks very much for the help guys!!

 

X2. The only thing this really affects is the shift points on the automatic transmissions