Is there a way I can correct my speed adter switching to 22's?

[Tilter]

I'd love to see what my actual MPG are, lol.

 

[TruckDriver]

There's lots of tools out there; the Tazer DT is the general recommendation, for the price you get calibration and a whole set of other options.

on the note of MPG, do a couple searches or look at the 'whats new' tab and you'll see some active convos about how far off MPG is regardless of calibrated speed... but that's a whole other topic

 

[Brisoup1]

I would think that after your speed odometer is re-calibrated for 22' wheels, it shouldn't be a issue since Ram offers a 22' Rim & Tire option. The trucks calculated MPG would be fairly accurate, since the MPG computer & Speedometer work together. As a last resort, you probably could have the Dealer/Stealer do it, but it will cost you some $$$.

 

[19ramsport]

If the new overall tire diameter is the same as the stock size, then your speedometer should still be ok.

 

[TruckDriver]

If the new overall tire diameter is the same as the stock size, then your speedometer should still be ok.

good advice; @Tilter use this 'size comparison calc'

Tire Size Calculator

The best tire size calculator. Use our tire size calculator to find tire size specs and suggested tire sizes. Then check prices for all available tire sizes.

tiresize.com

 

[Tilter]

Thanks all. It is showing different speed on my speedo than gps vs. with the old tires. The dealer says they can't do it but I will see if I can find one of these devices cheaply. SInce I don't want a tune it is really not worth it to me to spend the big bucks.

 

[19ramsport]

You can try the Hypertech Speedometer Calibrator programmer. It is pretty easy to use, part number 752504 works on the new 2019 Rams. You can also save money by buying a used one, but make sure to confirm with the owner that it was uninstalled as they become "vin locked" to the truck just like any other tuner/programmer.

 

[Dire Wolf]

Just went with larger tires and my dealer will do an update for me for about $40. Have an appointment next week. They said as long as the tires aren't crazy big. Went with 275 65r20 from 275 55r20.

**Update: Just got back from the dealer and they couldn't do it. Went into the computer where it should be and there was nothing for them to adjust. They contacted Ram and we are waiting to hear back.