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View Full Version : Rebalancing Tires after TPMS sensor replacement.

dnwong
02-03-2022, 02:16 PM
I have decided to fix the TPMS error (been like that for 5 years) on the XC90 by replacing the wheel sensors. Bought some cheap ebay ones. The replacements are little smaller. The top one in the pic is the new one. There is a 10gram difference between the 2. Is that enough a difference to affect the balance. Tires are 255x55R18.
mlytle
02-03-2022, 03:03 PM
yes. anytime the tire comes off the rim(even partially) should require a rebalance.
dnwong
02-03-2022, 04:46 PM
yes. anytime the tire comes off the rim(even partially) should require a rebalance.

Actually, I only broke the bead on 1 side. So, the other side still held in place and should keep the tire from moving on the rim.
BlackTalon
02-03-2022, 05:38 PM
If the tires don't spin on the wheels you are not accelerating and braking hard enough.

Just sayin'...
jhsmith
02-03-2022, 06:59 PM
It's an XC90. Do they even need to have their tires balanced? :)
Vicegrip
02-03-2022, 07:02 PM
Well, it depends….

How did you go about installing the devices? Break the bead down, reach in, swap out without clocking the tires? = no issue. (Not uncommon procedure) Or, remove the tire, install the device and reinstalled fire? Rebalance.

More info needed to provide reasonable answer.
dnwong
02-03-2022, 11:17 PM
Well, it depends….

How did you go about installing the devices? Break the bead down, reach in, swap out without clocking the tires? = no issue. (Not uncommon procedure) Or, remove the tire, install the device and reinstalled fire? Rebalance.

More info needed to provide reasonable answer.

Yep. I just broke the bead on 1 side and replace the sensor without breaking the other side. Tight fit had to wedge some 2x4 to hold the tire open.

Since I don't have a tire machine like some of us here (um Vicegrip), I make own tire bead breaker using a 3 1/2 ton jack.

Here is a video of it action.

https://vimeo.com/673452769
Vicegrip
02-04-2022, 08:58 AM
In that case no rebalance needed. Easy to test too. Take it for a drive.

Another way to break a bead is deflate and remove the valve core, lay wheel on its side and, carefully, drive onto the tire with another car. Recommend a helper to watch and guide.

(Wait, What?! Some people don't have their own tire changers and balancers? Clutched pearls and gasps)