Do offset wheels effect towing?
#1
Senior Member
Thread Starter
Do offset wheels effect towing?
I want to get wheels that are slightly offset. I've always like the look and will be changing the tires to a slight aggressive all terrain. I know the tires will be heavier than stock and effect gas mileage and towing power. Do offset wheels effect my ability to tow?
I tow a 21' CC boat a lot but planning on getting a camper in the 5-6k weight range.
I own a '16 5.0 Screw 4x4, 3.55 gears.
Thanks!
I tow a 21' CC boat a lot but planning on getting a camper in the 5-6k weight range.
I own a '16 5.0 Screw 4x4, 3.55 gears.
Thanks!
#2
Member
I want to get wheels that are slightly offset. I've always like the look and will be changing the tires to a slight aggressive all terrain. I know the tires will be heavier than stock and effect gas mileage and towing power. Do offset wheels effect my ability to tow?
I tow a 21' CC boat a lot but planning on getting a camper in the 5-6k weight range.
I own a '16 5.0 Screw 4x4, 3.55 gears.
Thanks!
I tow a 21' CC boat a lot but planning on getting a camper in the 5-6k weight range.
I own a '16 5.0 Screw 4x4, 3.55 gears.
Thanks!
.
#3
I want to get wheels that are slightly offset. I've always like the look and will be changing the tires to a slight aggressive all terrain. I know the tires will be heavier than stock and effect gas mileage and towing power. Do offset wheels effect my ability to tow?
I tow a 21' CC boat a lot but planning on getting a camper in the 5-6k weight range.
I own a '16 5.0 Screw 4x4, 3.55 gears.
Thanks!
I tow a 21' CC boat a lot but planning on getting a camper in the 5-6k weight range.
I own a '16 5.0 Screw 4x4, 3.55 gears.
Thanks!
In theory if those wheels were used in production the engineer would lower the FAWR and RAWR to account for this.
Whether you are going to load close enough to the limit for this to be an issue is a whole other question.
The following users liked this post:
bradtx (09-03-2019)
#5
Senior Member
Thread Starter
It will increase loads on the axle housing and bearings (Think longer lever).
In theory if those wheels were used in production the engineer would lower the FAWR and RAWR to account for this.
Whether you are going to load close enough to the limit for this to be an issue is a whole other question.
In theory if those wheels were used in production the engineer would lower the FAWR and RAWR to account for this.
Whether you are going to load close enough to the limit for this to be an issue is a whole other question.
#6
Senior Member
It will increase loads on the axle housing and bearings (Think longer lever).
In theory if those wheels were used in production the engineer would lower the FAWR and RAWR to account for this.
Whether you are going to load close enough to the limit for this to be an issue is a whole other question.
In theory if those wheels were used in production the engineer would lower the FAWR and RAWR to account for this.
Whether you are going to load close enough to the limit for this to be an issue is a whole other question.
Example (heavy truck axles are all 2 tapered bearing systems): offsetting wheels by 2-3in can derate an axle down from 18,000lbs GAWR to 12,000lbs simply due to bearing loading. We had one RV application using a 6.5in offset and we had to use special Timken bearings and a heavier duty axle to get the rating back up to 14,000lbs.
The F150 is a single roller bearing which is much lighter duty and would be more sensitive to eccentric loads, so don't go too far and don't cry if you burn up bearings at full payload. If you're talking a 0.5" offset then maybe it's not a huge de-rate, but I personally cringe at the 2-3in offset systems I see some guys running.
Last edited by SoPoSassquatch; 09-01-2019 at 03:16 PM.
The following 2 users liked this post by SoPoSassquatch:
bradtx (09-03-2019),
clarkritchie (09-09-2019)
#7
Old Fart
You also need to look at the weight limit on the wheel, I have seen wheels with a weight rating down as low as 2500. If weight limit goes down so does side load and the rotational load.
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#8
Senior Member
Thread Starter
As a heavy truck axle engineer - can confirm. Will definitely derate bearing capacity and life especially loaded. Now your particular duty cycle and offset might not matter THAT much for your overall life, but it definitely would be a de-rate.
Example (heavy truck axles are all 2 tapered bearing systems): offsetting wheels by 2-3in can derate an axle down from 18,000lbs GAWR to 12,000lbs simply due to bearing loading. We had one RV application using a 6.5in offset and we had to use special Timken bearings and a heavier duty axle to get the rating back up to 14,000lbs.
The F150 is a single roller bearing which is much lighter duty and would be more sensitive to eccentric loads, so don't go too far and don't cry if you burn up bearings at full payload. If you're talking a 0.5" offset then maybe it's not a huge de-rate, but I personally cringe at the 2-3in offset systems I see some guys running.
Example (heavy truck axles are all 2 tapered bearing systems): offsetting wheels by 2-3in can derate an axle down from 18,000lbs GAWR to 12,000lbs simply due to bearing loading. We had one RV application using a 6.5in offset and we had to use special Timken bearings and a heavier duty axle to get the rating back up to 14,000lbs.
The F150 is a single roller bearing which is much lighter duty and would be more sensitive to eccentric loads, so don't go too far and don't cry if you burn up bearings at full payload. If you're talking a 0.5" offset then maybe it's not a huge de-rate, but I personally cringe at the 2-3in offset systems I see some guys running.
#9
Bump steer is noticeable if they sit out too far.
#10
Martin
A 1/2" offset, I'd agree with no affect at all. The credentials have voted but come on it's a 1/2". I've run 2" spacers for 50k and no crying yet, might be coming but not yet.
The following users liked this post:
SoPoSassquatch (09-02-2019)