06 ram, 3.7 v6, manual trans......high rpms at highway speeds
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And you would be correct, because tire size is based upon rim size, not overall diameter size. Lets look at it this way, you may have 33 inch tall tires but you sure don't have them on a 33 inch wheel, and whatever wheel does fit that tire, if its a 18, its an 18 inch tire, 19..20 no matter what it is, whatever the wheel size tells you what size tire you have, the other numbers just tell you how wide and how tall the tire is, but I guarantee you, this op is correct in his statement of having 17 inch tires on his truck. I worked at a tire plant nearly 40 years and tires are sized exactly as this mechanic has stated
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Joined: Nov 2012
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You should listen to someone that tells you of 45 years of experience. because he is absolutely correct, and you are not. Tires are not sized according to width or overall circumference or overall diameter, they are sized by rim size. If a vehicle has 17 inch rims it uses 17 inch tires as the op suggested to you but you were too into your calculations to hear him. Stop being a *****
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Joined: Aug 2007
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From: N. Florida
You should listen to someone that tells you of 45 years of experience. because he is absolutely correct, and you are not. Tires are not sized according to width or overall circumference or overall diameter, they are sized by rim size. If a vehicle has 17 inch rims it uses 17 inch tires as the op suggested to you but you were too into your calculations to hear him. Stop being a *****
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Joined: Feb 2012
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And you would be correct, because tire size is based upon rim size, not overall diameter size. Lets look at it this way, you may have 33 inch tall tires but you sure don't have them on a 33 inch wheel, and whatever wheel does fit that tire, if its a 18, its an 18 inch tire, 19..20 no matter what it is, whatever the wheel size tells you what size tire you have, the other numbers just tell you how wide and how tall the tire is, but I guarantee you, this op is correct in his statement of having 17 inch tires on his truck. I worked at a tire plant nearly 40 years and tires are sized exactly as this mechanic has stated
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Joined: Aug 2013
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From: Ohio
Gee, these 2 guys are going to change the "Tire"world.. and they do not work for goodyear.
and what does 245/70 means... if not the tire size ....???????
I am done here... can not teach Or talk to young people anymore.
and what does 245/70 means... if not the tire size ....???????
I am done here... can not teach Or talk to young people anymore.
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I, too, have an 06 V6 Manual 6 speed w/stock 3:21 gears. Off the top of my head, I know rpm's are right on 2000 at 70 but need to check for 75 and 80 next time I go out. I don't think they'll go up to 2500 just to go up to 75 but maybe. My first thought was 'are you still in 5th gear'? And your tires are correct. There is an issue with the tach on these model years but that problem is rpm's reading too low (due to stepper motor I think) like it will drop down to 200 at idle, not higher and only at rpm's below 2000 as mine has started occasionally doing this.
When I first bought my '06 new after having an '03 V6 5speed, I would catch my Dad cruising along in 5th, forgetting this is a 6 speed!..He was killing my mileage
When I first bought my '06 new after having an '03 V6 5speed, I would catch my Dad cruising along in 5th, forgetting this is a 6 speed!..He was killing my mileage
Let me know by email please what it reaches when you get to 75 and 80 n the highway please. jessespurlock1@gmail.com
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I'm hoping to remember to look while on my way to work here shortly. Long day so I won't be at computer 'till late tonight tho...
Let me know by email please what it reaches when you get to 75 and 80 n the highway please. jessespurlock1@gmail.com
Champion
Joined: Aug 2007
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From: N. Florida
So if you need a 20"x8"x10" box to put a part in, you just go to fedex and say "I need a 10" box???". The 17" is only a portion of the tire size, as it states it's just for a 17" rim but doesn't state the width or heighth. Cuz otherwise there are a thousand different sized 17" tires.
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I'll be switching to smaller rims since 2 of my chrome 20's got destroyed last week on my '04 by a stump and a boulder when my friend went off the road. Wonder how I'd ever figure out what size 17" tires to get to match the 20's???
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Ok here's what I could observe: In 5th, almost 2800 at 70 almost 3000 at 75 and almost 3100 at 80. This was in 5TH gear. In 6TH was doing 75 and read 2200ish so I don't think 80 would get it to 2500; 3:21 gears and tall 6th gear don't move rpm's up much each 5 miles per hour. Seems to me your readings at 75 and 80 are basically the same as my data observed....in 5TH gear, not 6TH! So either your not shifting to 6th or your axle ratio has been changed by a previous owner...