Is it worth it?
Thread Starter
|
Elder User
Joined: May 2003
Posts: 858
Likes: 1
Is it worth it?
I had a front blow out on my Firestones the other day so I had to put the spare on which has never touched ground. I decided it was time for the 285's so before I went and bought them I measured the 265 on the front. The static loaded radius of the 285's is a 1/4" higher, {15-1/4" to 15-1/2"} and the on truck diameter is .800 taller with the 285's. My question is, is it worth the $98-$102 {dealer quotes} to get the speedometer adjusted? Do they put in a generic number for the revolution's per mile or do they actually measure by chalking the distance to figure actual circumference? The tire manufacture for my 285's says 628 rev's per mile. Does anybody know what the number is in the computer for the factory 265's?
Thanks, Antelope V-10
Thanks, Antelope V-10
Tuned
Joined: Apr 2001
Posts: 411
Likes: 26
Trending Topics
Posting Guru
Joined: Nov 2003
Posts: 1,949
Likes: 0
From: Near DC
I agree with all above.
With 265's at 30 mph I show 1.3 mph faster, at 70 I show 2.2 mph faster.
285's will do fine.
That should ease your mind, keep your money, the stealer already has enough.
With 265's at 30 mph I show 1.3 mph faster, at 70 I show 2.2 mph faster.
285's will do fine.
That should ease your mind, keep your money, the stealer already has enough.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Senior User
Joined: May 2003
Posts: 248
Likes: 0
This may be obvious, but before you spend the money on recalibrating, maybe you could use (borrow) a handheld GPS to measure your speed and compare it to your speedometer. Like the fella said, maybe it will be spot on with the 285's.
It's up to you whether to correct any difference, but personally, I wouldn't worry much about whether I was going 70 or 72. Or if I had 100,000 miles or 103,000 miles on my truck. I guess you don't want to be speeding, though. But in the grand scheme of life, knowing our exact speed is really not that important (to me)
It's up to you whether to correct any difference, but personally, I wouldn't worry much about whether I was going 70 or 72. Or if I had 100,000 miles or 103,000 miles on my truck. I guess you don't want to be speeding, though. But in the grand scheme of life, knowing our exact speed is really not that important (to me)
Junior User
Joined: Jan 2005
Posts: 98
Likes: 0
From: indian rocks beach fl
