Leveling question June 22, 2018, 08:01:56 am Does it matter which rear wheel inside or out that you put leveling blocks under? Maybe both should be used? I wouldn't think so but just thought I'd ask out of an abundance of caution. Thanks
Re: Leveling question Reply #1 – June 22, 2018, 08:05:46 am Put them under both wheels, inner and outer, equally. 1 Likes
Re: Leveling question Reply #2 – June 22, 2018, 08:41:57 am Quote from: gmfl - June 22, 2018, 08:05:46 amPut them under both wheels, inner and outer, equally.I was thinking that might be a good idea but wasn't sure as to why exactly except just to spread the load.
Re: Leveling question Reply #3 – June 22, 2018, 08:59:48 am Doing some more research on this and apparently it's a tire issue not a suspension issue as I was thinking. This discussion says tire manufacturers recommend blocking both wheels. Mines just under outside wheel right now, think I'll fix that this morning."Thanks Will.I just viewed the Michelin site's "Things RV owners should know" videoin their library. It made reference to the recommendation to fullysupport each tire. Also had good info on weighing and determiningproper tire inflation.Paul j***@cs.com 13 years agoPermalinkRaw Message...My RV Owners manual states to support both wheels. It doesn't say why,I just follow the manual... JoeWilliam Boyd 13 years agoPermalinkRaw Message...I agree with Joe, but go to an RV sales place and look at theplastic stack leveling blocks, their instructions indicate to blockboth tires. Check any MH owners book and they will *ALL* say blockboth tires. I would say block both tires for at least one reason andthat is to not have the tire setting there overloaded, consideringit is supporting what two tires was originally supporting. It cancause the supporting tire to develop a flat spot and lead tobouncing and improper ware."
Re: Leveling question Reply #4 – June 22, 2018, 11:26:29 am It is my understanding that when levelling the MotorHome it is vitally important to support the Tire (both dually’s in the case of levelling only one rear corner or all four rear tires if the back of the rig needs levelling). Supporting the tire evenly from side to side and front to back is critical. You do not want any of the supported surface (bottom) of the tire hanging off the levelling block(s). Doing so can cause damage to the internal tire surfaces (tearing of the belts) as well as damaging the outer surfaces of the tire. Caution should be taken when levelling your rig. Any damage caused from an improperly supported tire may not be evident until on the road and that could surely spell disaster. We don’t want that.Kent 5 Likes
Re: Leveling question Reply #5 – July 02, 2018, 02:22:19 pm I was shocked when I saw a 40’ Class A at Serrano with a combination of linx blocks and 2x4’s (in the same stack) on both front and rear drivers side tire sets. What shocked me even more was the fact that to obtain level the owner drove up partially and stopped with the tires hanging off the back of the blocks with “no visible means of support”. I had quite the challenge myself, but got it spot on. Fridge struggled until I finally made level. Think I’ll avoid #122 at Serrano next time.I hope the Class A’s tires survive and everyone makes it home with no issues.Kent
Re: Leveling question Reply #6 – July 02, 2018, 02:36:05 pm Quote from: Sawyer - June 22, 2018, 08:41:57 amI was thinking that might be a good idea but wasn't sure as to why exactly except just to spread the load. Rear tire inflation pressure is based on distributing weight on the rear axle evenly among the four tires. You can look up load/inflation tables for your tires to see how much you may be overstressing them. An additional issue is that blocks under both tires will lift that side higher than under just one.Steve
Re: Leveling question Reply #7 – July 02, 2018, 03:09:31 pm Quote from: Steve - July 02, 2018, 02:36:05 pmRear tire inflation pressure is based on distributing weight on the rear axle evenly among the four tires. You can look up load/inflation tables for your tires to see how much you may be overstressing them. An additional issue is that blocks under both tires will lift that side higher than under just one.SteveI did notice that when I reblocked both tires
Re: Leveling question Reply #8 – July 03, 2018, 06:29:08 am I would not overly stress about this too much. When I level I do my best to evenly distribute on the tires but at the end of the day it’s not going to ruin your tires or your RV. When you cruise down the highway at 60 mph every single bump you hit puts a much larger stress and deformation on the tire carcass than you ever could from leveling block placement. Likewise the stress on the individual duals when you hit road imperfections loads the axle components to a much higher degree than leveling off 1 dual ever would. The chassis/tires are designed to handle all these extreme stresses for 200k miles, and sitting static with an unevenly loaded tire just shouldn’t be something you loose sleep about at night. 1 Likes
Re: Leveling question Reply #9 – July 03, 2018, 08:47:39 am Quote from: Cor2man - July 03, 2018, 06:29:08 amI would not overly stress about this too much. When I level I do my best to evenly distribute on the tires but at the end of the day it’s not going to ruin your tires or your RV. When you cruise down the highway at 60 mph every single bump you hit puts a much larger stress and deformation on the tire carcass than you ever could from leveling block placement. Likewise the stress on the individual duals when you hit road imperfections loads the axle components to a much higher degree than leveling off 1 dual ever would. The chassis/tires are designed to handle all these extreme stresses for 200k miles, and sitting static with an unevenly loaded tire just shouldn’t be something you loose sleep about at night. That was my first instinct on the subject but the concensus seems to be the opposite so I will error on the side of caution.
Re: Leveling question Reply #10 – July 03, 2018, 04:30:00 pm OK, I will weigh in here. It is unwise to put blocks under just one of the duallies. If you need to raise the dual tires, both should have blocks of equal height. Here is why.As mentioned above, the tires are pressurized, and the intent is, to spread the axle load evenly between 4 tires, or half the axle load between two tires. If you block just one of those two tires, the blocked tire is carrying MUCH more load than it should be. Why is this different from hitting a rock or bump when driving? Because it persists for a long period of time. It is perfectly appropriate to raise one side of the rear or front axle more than the other side. In fact, unless your site is perfectly level side to side, it is important that you do so, just as you will raise the front and back by different amounts. You should not put a block under just one of the dual tires, because it does not spread the load evenly between the two tires. You do not put 80 pounds in one of the duals and 40 in the other - that is obvious. Why is it not equally obvious that you should not put twice as much load on one tire as is on the other? Do not equate a momentary differential loading from a bump with a sustained, days-long uneven loading of your tires.Ken F in WY 6 Likes
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