Tuner

[CaliCrusher]

How can you tell if your JK has been tuned for 35s (34.5s really, 315x70x17)?

I would imagine RPMs at a certain speed would be the tell tale sign, I just don't know what they are. I could always ask the dealer the did the lift and tires before I bought the Jeep, but I don't want to rely on what they have to say.

 

[JKULIFE]

Start with your speedo. If it reads the correct speed it has been calibrated to your tire size.

 

[jeeeep]

if you have a gps you can compare your speed to your speedo.
you can also check it against mileage posts and calculate how much time it takes you to go 1 mile at a given speed.

 

[CaliCrusher]

Start with your speedo. If it reads the correct speed it has been calibrated to your tire size.

Ok, so like a 'one size fits all' type of thing. If the Speedo checks out then everything is good.


Sent from my SCH-I545 using WAYALIFE mobile app

 

[CaliCrusher]

According to the gps the speedometer shows 20 mph but I'm running 22. Is that significant?

Sent from my SCH-I545 using WAYALIFE mobile app

 

[JKWrang]

Fwiw the pathfinder at work, the gps and the vehicle tracker all read different numbers so of your speedo says 20 and you're doing 22 on gps I wouldbt be worried.

Sent via secret squirrel underground network.

 

[jeeeep]

According to the gps the speedometer shows 20 mph but I'm running 22. Is that significant?

Sent from my SCH-I545 using WAYALIFE mobile app

you should be within that difference range all the way up to speed if you are you're good to go.