Must change speedo gear for warranty
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Senior Member
Joined: Dec 1969
Posts: 130
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From: CHARLOTTE,NC USA
Must change speedo gear for warranty
Hi all, got the phone call from Aaron of Ford technical help from the Ford co., for you guys who upgrade from 16" to 17" with the tires more than 30" diameter must have the speedometer gear changed by a certified Ford tech. to honor warranty. They already had a bad experience with a Explorer with the upgrade and the ABS failed. He even try to set an appointment for me for July 20 to a dealer near me for the gear change. I guess it's for safety reasons. For you guys out there with big tires, please be careful and checked with your dealer tech. for advice if you didn't change the gear. I decided to change tires instead since I ordered the 275/60/17 last week. steve
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Joined: Mar 1998
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From: Blue Ridge Mountains, GA
I could be wrong but I think the 275/60/17 inch tires are exactly 30". We should be O.K. on that.
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'97 XLT Reg. Cab, 4.2V6, 5spd, Superchipped, K&N Air Filter, Lund Deflector, Dash Mat, MagnaFlow Muffler, Hellwig Rear Sway Bar, Edelbrock Shocks, Duraliner, Extang Saber Tonneau, Bell-Tech 2" Rear Drop, Amer. Rac. Atlas Wheels Clad in 275/60/17 Eagle GTII. Likes straightaways, loves twisties.
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'97 XLT Reg. Cab, 4.2V6, 5spd, Superchipped, K&N Air Filter, Lund Deflector, Dash Mat, MagnaFlow Muffler, Hellwig Rear Sway Bar, Edelbrock Shocks, Duraliner, Extang Saber Tonneau, Bell-Tech 2" Rear Drop, Amer. Rac. Atlas Wheels Clad in 275/60/17 Eagle GTII. Likes straightaways, loves twisties.
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Joined: May 1999
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From: Copley, Ohio
275/60-17s are 30" tires same as 255/70-16s.
If you had the 235/70-16s on it originally, they're only 29" dia, so your speedo, etc could be off. No idea how a small dia change like that affects ABS, but it seems unlikely that Ford would put themselves in a situation where changing to a factory optional tire dia would create a liability situation for them
If you had the 235/70-16s on it originally, they're only 29" dia, so your speedo, etc could be off. No idea how a small dia change like that affects ABS, but it seems unlikely that Ford would put themselves in a situation where changing to a factory optional tire dia would create a liability situation for them
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Joined: Dec 1969
Posts: 996
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From: TUCSON,AZ,USA
I would have a couple of questions about that phone call:
1. How would the know you didn't change the speedo gear unless they took it out to count the teeth?
2. Whe a Ford certified mechanic? Here in Tucson we have shops that do nothing but speedometer that could simply do this change?
3.Do you think they are just trying to intimidate you so they can make a buck?
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97 F-150, 2WD, Reg Cab,Flareside,Dk Toreador Red, 4.6, 3.55 LS, EGR Bug Deflector, ******* Bed Cover, Bed Liner, XL Full Length Running Boards, Air Aid Kit, Gibson Single Out Cat Back, Superchips, TransGo Shift Kit, Hellwig Rear Sway Bar, Hellwig 2500# Overload Springs
1. How would the know you didn't change the speedo gear unless they took it out to count the teeth?
2. Whe a Ford certified mechanic? Here in Tucson we have shops that do nothing but speedometer that could simply do this change?
3.Do you think they are just trying to intimidate you so they can make a buck?
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97 F-150, 2WD, Reg Cab,Flareside,Dk Toreador Red, 4.6, 3.55 LS, EGR Bug Deflector, ******* Bed Cover, Bed Liner, XL Full Length Running Boards, Air Aid Kit, Gibson Single Out Cat Back, Superchips, TransGo Shift Kit, Hellwig Rear Sway Bar, Hellwig 2500# Overload Springs
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Senior Member
Joined: Dec 1969
Posts: 130
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From: CHARLOTTE,NC USA
Sorry guys, I forgot to mention the tires I had on is 265/70/17 which is 31.7" in diameter and I am replacing them with 275/60/17 on Monday. Firestone will credit the tires toward the new size so anything lost here is mostly time and energy.
Thank you all for your inputs. steve
Thank you all for your inputs. steve
