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Old 04-10-2005, 01:00 PM   #1
 
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Question on tire sizing for new wheels on a 4x2

My wife has given me the okay to get a new set of wheels and tires. I am wanting something to fill the wheel well more than my stock 17's. Not this plus sizing stuff that keeps me in the same diameter. So far as I can see 305/50/R20's seem to do this, what will be my repercussions on a 3.73 rear end and stock 4x2 truck? Will this work or will I have issues with take off speed, torque??????? You name it, what will it do or not do???

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Old 04-10-2005, 01:56 PM   #2
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Question on tire sizing for new wheels on a 4x2

The 20's are so darned heavy, they only come through on our trucks with the 3.92 gears. You will probably notice less low end torque due to the added weight, plus you probably won't be able to burn out (but that's a good thing, depending on how you look at it). The loss in power would be noticable even with stock tire size, but when bumping up to a tire that's 33 inches in diameter, your fuel economy will suffer as well.
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Old 04-10-2005, 04:07 PM   #3
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Question on tire sizing for new wheels on a 4x2

you have a 2500? then it really is better because you will lose less than anyone changing tire/wheel size. just stay away from chrome and you will be fine
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Old 04-10-2005, 10:33 PM   #4
 
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Question on tire sizing for new wheels on a 4x2

I have a 1500 and I believe from what I've been researching, my bolt pattern is 5x139.7??????

Whats wrong with chrome?????????

how much would it cost to have the dealership change my gears out to 3.92??????????
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Old 04-10-2005, 10:38 PM   #5
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Question on tire sizing for new wheels on a 4x2

I GOT ON OF THE MECH AT MY DEALERSHIP TO SWAP OUT MY 3.91 FOR A SET OF 4.56 HE CHARGED ME $125 PLUS PARTS TIRES ARE 325/50/20s
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Old 04-10-2005, 11:17 PM   #6
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Question on tire sizing for new wheels on a 4x2

PTown: If you have a 1500, then you either have 3.55 or 3.92 gearing, not 3.73. The bolt pattern is 5 on 5.5, or 5 x 5.5 (however you want to express it). If you want to go with 20"+ without gaining too much wheel weight, be prepared to pay $$$ for the upgrade. Here are some 22" Weld Racing Evo wheels on Ebay. Full retail on forged 20's is gonna be steep.
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Old 04-10-2005, 11:51 PM   #7
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Question on tire sizing for new wheels on a 4x2

chrome is heavy and in metric 5x139.7 is 5x5.5
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Old 04-11-2005, 12:05 AM   #8
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Question on tire sizing for new wheels on a 4x2

Thanks, shsu. It's a little late in the day for me to summon any math skills.
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Old 04-11-2005, 01:30 AM   #9
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Question on tire sizing for new wheels on a 4x2

So are we gonna go with metric or standard here?
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Old 04-11-2005, 05:18 PM   #10
 
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Question on tire sizing for new wheels on a 4x2

I wanted to get some chrome, must be the Ptown in me or something........but I wanted to go with 20's because I can do this for under 2000 bucks and so I'm inclined to go for the bling bling thats shiny. I would like 305/50/r20's but I don't know if they will cause a problem on a stock 4x2 1500 that has 17's on it now?????? Anyone know this one?????????? They're only a couple inches taller and would help fill the wheel well a little more than just plus sizing from the stuff I'm reading....
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