tyre change vs gearing/speedo help - Ford Explorer Ranger Enthusiasts "Serious Explorations"®

shaunv8 · 03-06-2003, 09:39 PM

hi all i lifted my 97 explorer 2" all round now im replacing the std 235 x15 with 10.5 r 31 15 any probs forseen with speedo or anything else.... how will gearing go cheers shaun

**Alec** · 03-06-2003, 10:06 PM

depends on what gears you have now. With the V8 you most likely have 3.73 gears which you'll be ok with. You may have 3.55 which will be a bit worse but not too bad.

As for the speedo, you'll be reading about 5 mph low. To fix this you'd need a speedo gear with one less tooth. However, I dunno if your 97 V8 uses a speedo gear or the VSS for the speedo. If it is electronic, you probably won't want to spend the money to get it recalibrated for 31s.

Good luck!

shaunv8 · 03-07-2003, 09:09 PM

sorry im in OZ wiyh the 4l v6 and kmh any info please

03-06-2003, 09:39 PM	#1
shaunv8 Wannabe Elite Explorer perth australia 97 xl Join Date: Feb 2003 Posts: 65 Vehicle Specs	tyre change vs gearing/speedo help hi all i lifted my 97 explorer 2" all round now im replacing the std 235 x15 with 10.5 r 31 15 any probs forseen with speedo or anything else.... how will gearing go cheers shaun

03-06-2003, 10:06 PM	#2
Alec Mod Emeritus Houston, Texas 2008 JK Join Date: Apr 2000 Posts: 16,056 Vehicle Specs	depends on what gears you have now. With the V8 you most likely have 3.73 gears which you'll be ok with. You may have 3.55 which will be a bit worse but not too bad. As for the speedo, you'll be reading about 5 mph low. To fix this you'd need a speedo gear with one less tooth. However, I dunno if your 97 V8 uses a speedo gear or the VSS for the speedo. If it is electronic, you probably won't want to spend the money to get it recalibrated for 31s. Good luck! __________________ Alec "Dr. Candlepower" Rosenbaum Daily: 2008 JK Gone: EE "Splat", 2003 VW GTI VR6, 85 Bronco project

03-07-2003, 09:09 PM	#3
shaunv8 Wannabe Elite Explorer perth australia 97 xl Join Date: Feb 2003 Posts: 65 Vehicle Specs	gearing changes ith tyres sorry im in OZ wiyh the 4l v6 and kmh any info please