Wheel/Tire weird bump or something

jakejorgenson

New member

Equipment
L39
Oct 17, 2015
5
0
1
Midway, UT, USA
Recently my L39 when I drive down the parking lot from my storage area in back has what feels like you are going over a bump but it happens every time one of the rear tires rotates. I don't see anything obviously wrong. It did sit for a little without being used so I thought maybe it was just because it sat in the same position for a bit, but then I aired it up and drove it around and it hasn't stopped. I left it sitting for a few weeks again in a different location and what would be a different position also on and when I drove it a couple of days ago it still felt the same. Again, I can't see anything noticeable. Any ideas?
 

Hugo Habicht

Well-known member
Lifetime Member

Equipment
G1900
Jun 24, 2024
865
1,199
93
Ireland
Yes, tyres get flat spots when they sit for ages.

My experience is that it gets better over time, but never really 100%. Maximum pressure helps when storing for a long time. Or move the vehicle a few feet every few weeks.
 
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jaxs

Well-known member

Equipment
B1750HST
Jun 22, 2023
966
743
93
Texas
The conventional way of checking tires for flat spots or separation is to jack wheel a few inches off the ground, place a fixed object off to one side 1/2" from tread then slowly rotate tire by hand to see if 1/2" gap changes.