CX5 towing at altitude
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Junior Member
Joined: Oct 2022
Posts: 1
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From: Arvada, CO
CX5 towing at altitude
Hello!
My 2019 Mazda 2.5 AWD CX-5 has a..
TTW of 2,000 pounds
GCWR of 6,195 pounds
Curb Weight of 3,800 pounds
That means the car and a trailer can "move" 2,795 pounds.
My question is around altitude. You have to reduce "tow load" by 10% for every 1,000 meters. On a 3,000 meter high pass you would reduce "tow load" by 30%. So, there are two ways I can read "tow load"
A. The TTW is 2,000 pounds. Reduce by 30%. You can tow 1,400 pounds.
B. The GCWR is reduced to 4,337 but the curb weight is still 3,800 pounds. So the new amount the car can "move" is 537 pounds. This would mean even 5 people in the car would max out the ability of the car on a 9,000 foot mountain pass much less a trailer or gear.
Ultimately.... I would like to tow a 850 pound trailer over Vail pass (11,000 ft) with two people in the car. Thanks! -Will
My 2019 Mazda 2.5 AWD CX-5 has a..
TTW of 2,000 pounds
GCWR of 6,195 pounds
Curb Weight of 3,800 pounds
That means the car and a trailer can "move" 2,795 pounds.
My question is around altitude. You have to reduce "tow load" by 10% for every 1,000 meters. On a 3,000 meter high pass you would reduce "tow load" by 30%. So, there are two ways I can read "tow load"
A. The TTW is 2,000 pounds. Reduce by 30%. You can tow 1,400 pounds.
B. The GCWR is reduced to 4,337 but the curb weight is still 3,800 pounds. So the new amount the car can "move" is 537 pounds. This would mean even 5 people in the car would max out the ability of the car on a 9,000 foot mountain pass much less a trailer or gear.
Ultimately.... I would like to tow a 850 pound trailer over Vail pass (11,000 ft) with two people in the car. Thanks! -Will
Senior Member
Joined: Apr 2021
Posts: 1,859
Likes: 30
From: Maine
Several pick-up websites and RV forums list the following.
"Gasoline engines lose power by 3-4% per 1,000 ft. elevation. To maintain performance, reduce GVWs and GCWs by 2% percent per 1,000 ft. elevation."
However, I've not personally seen any mathematically based formulas that would corroborate this.
Meaning I have no idea if it is fact or not.
If fact than you'll have no issue.
"Gasoline engines lose power by 3-4% per 1,000 ft. elevation. To maintain performance, reduce GVWs and GCWs by 2% percent per 1,000 ft. elevation."
However, I've not personally seen any mathematically based formulas that would corroborate this.
Meaning I have no idea if it is fact or not.
If fact than you'll have no issue.
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