Stock tire size on a 96 ram
12-23-2009, 11:07 AM
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12-26-2009, 11:47 AM
#19
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Trucks with the wider alloy rims came with 265/75 tires. Steel rims are only 6.5" wide and technically not rated for anything wider than a 245/75 tire.
As of 2005 no duallies came with 235/85 tires. I switched to 235/85 on my truck and a shop that only did things "by the book" would not install the tires on my truck.
Changing from 245/75 to 235/85 corrected my speedo. It originally read a touch fast.
As of 2005 no duallies came with 235/85 tires. I switched to 235/85 on my truck and a shop that only did things "by the book" would not install the tires on my truck.
Changing from 245/75 to 235/85 corrected my speedo. It originally read a touch fast.
12-27-2009, 12:05 PM
#20
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The best way to check your speedo is to hop on the freeway and reset your trip-o-meter as you pass a mile marker. With 285's, your odometer should turn 9.3 miles after you pass 10 mile markers meaning your speedo is 7% slow.
It is incorrect to assume your speedo is off by 5mph or 7 mph etc, the amount of correction varies with speed.
If you really want an accurate reading, reset your trip ometer and drive 100 miles. With 285's, your trip o meter should read somewhere between 92.9 and 94.1 miles depending on tire wear, air pressure, speed traveled, load on truck, etc. 100 - 92.9 is 7.1 or 7.1% correction. If you multiply your speedo by 1.071, you'd have a pretty accurate idea of your current speed.
In my experience, 7% is a great approximation and 65mph on the speedometer calculates to 69.9 mph.
70mph on speedo is 75.3 mph.
Don't drive yourself crazy trying to perfectly calculate speed, tire wear, tire air pressure, and load all effect your speedo since the tires squat down and don't quite cover as much ground each revolution.
It is incorrect to assume your speedo is off by 5mph or 7 mph etc, the amount of correction varies with speed.
If you really want an accurate reading, reset your trip ometer and drive 100 miles. With 285's, your trip o meter should read somewhere between 92.9 and 94.1 miles depending on tire wear, air pressure, speed traveled, load on truck, etc. 100 - 92.9 is 7.1 or 7.1% correction. If you multiply your speedo by 1.071, you'd have a pretty accurate idea of your current speed.
In my experience, 7% is a great approximation and 65mph on the speedometer calculates to 69.9 mph.
70mph on speedo is 75.3 mph.
Don't drive yourself crazy trying to perfectly calculate speed, tire wear, tire air pressure, and load all effect your speedo since the tires squat down and don't quite cover as much ground each revolution.
12-28-2009, 07:48 PM
#21
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Hey guys,
thanks again.
I will just figure it is around 5 off. im not to concerned with it i was just wondering. for the summer i will be running 33x12.50's so all of this will be down the drain.
thanks again.
I will just figure it is around 5 off. im not to concerned with it i was just wondering. for the summer i will be running 33x12.50's so all of this will be down the drain.
02-22-2019, 06:17 AM
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I was just funnin with ya.
I think the tire sizes kind of bounced around a little over the years depending on GVW and purpose. My Dad ordered the "mud and snow" tires for his instead of the stock Michelins and got Goodyear Garbage 265/75-16's. They went about 25K and were an upgrade so he paid extra for it.
Kurt
I think the tire sizes kind of bounced around a little over the years depending on GVW and purpose. My Dad ordered the "mud and snow" tires for his instead of the stock Michelins and got Goodyear Garbage 265/75-16's. They went about 25K and were an upgrade so he paid extra for it.
Kurt
02-23-2019, 05:25 PM
#23
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They'd be taller by 40mm and wider by 30mm so about an inch if I did the conversion right.......tread design style would affect appearance...Mud/snow is usually chunkier than all season or hiway rib.
02-23-2019, 08:07 PM
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This is how ol red looks fer now.
thanks man. I went and looked at some 265/75/16s and i plan on makin the switch gonna def get the mud/snow tires for it as well.
03-03-2019, 11:17 AM
#26
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