Towing with 35" tires

07blackz71

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Did my first road trip with my 35" bfg ko2 tires towing my 12' trailer and UTV. Drove in 9th gear and towing mode. Problem I had was any hill when driving over 65 mph it would shift down to 8th and even 7th gear. It got worse the faster I drove. Is this normal? Anyone else with 35" tires experience this?
 
I think you have an issue. I run 35s and a lift and get better gas mileage. Mine stays in 10th gear going uphill towing a 30 footer no issues.
 
Something doesn’t seem right.
You should barely notice that trailer/load.
 
I don't have the speedo corrector. I do have the range pulsar but never updated the tire size. But I do have the stop/start and dfm turned off. Also I have the throttle sensitivity at +1. Would that make a difference? Would changing tire size in the pulzar actually help?
 
Just a FYI, setting 1 is a 15% reduction in throttle response. Maybe that’s what’s causing your issue.

IMG_6635.jpeg
 
I don't have the speedo corrector. I do have the range pulsar but never updated the tire size. But I do have the stop/start and dfm turned off. Also I have the throttle sensitivity at +1. Would that make a difference? Would changing tire size in the pulzar actually help?
YES it will make a difference! You have a 2" taller tire than stock. Your speedometer is going to be way off and the shifts are based on speed so everything is out of whack!
 
YES it will make a difference! You have a 2" taller tire than stock. Your speedometer is going to be way off and the shifts are based on speed so everything is out of whack!
I will try adjusting the tire size this weekend. I wonder how exact I need to be on the tire size
 
An update. I finally adjusted for my tire size and it helped. I didn't tow anything but everyday driving got better. It took a day for everything to adjust like the transmission. It seems to shift better, run smoother, and less sluggish. MPG also increase.

I think in a few weeks I will be towing the same load again and I will report back on the overall out come.
 

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