I live in Colorado. My apartment is at 7,000 feet, and there are plenty of highways that are at 9,000 - 10,000 feet.
At this altitude, a naturally-aspirated engine loses about 20%-30% of it's horsepower relative to sea level. So, the Pentastar in my 2014 JKUR is producing around 210 hp.
So far, the drivetrain is stock. I have an automatic transmission and the 4.10 axle ratio, and the stock 32" Rubicon tires.
I am considering buying a lift and going to 35" tires, but worried about the effect on performance at this altitude and whether I would need to regear. Plus the weight from bumpers and a winch at some point...
I am okay with the performance now, but it is certainly not quick, and I am concerned that it will feel slow and labored with 35" tires. I see lots of people saying they don't have a problem with the performance with 35s, but they're at or near sea level - their performance with 35s is probably pretty close to what I get for stock performance.
Anyone living in the high country who can weigh in? Is a JKUR with 35s and some extra junk manageable with the stock 4.10 gearing, or is a regear necessary?
At this altitude, a naturally-aspirated engine loses about 20%-30% of it's horsepower relative to sea level. So, the Pentastar in my 2014 JKUR is producing around 210 hp.
So far, the drivetrain is stock. I have an automatic transmission and the 4.10 axle ratio, and the stock 32" Rubicon tires.
I am considering buying a lift and going to 35" tires, but worried about the effect on performance at this altitude and whether I would need to regear. Plus the weight from bumpers and a winch at some point...
I am okay with the performance now, but it is certainly not quick, and I am concerned that it will feel slow and labored with 35" tires. I see lots of people saying they don't have a problem with the performance with 35s, but they're at or near sea level - their performance with 35s is probably pretty close to what I get for stock performance.
Anyone living in the high country who can weigh in? Is a JKUR with 35s and some extra junk manageable with the stock 4.10 gearing, or is a regear necessary?