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Old 02-04-2013, 04:10 PM   #1
UKNOWME
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20" wheel backspace

I'm trying to hurry and order some Eagle 225 wheels for my 80 C10 before cutoff time. I'm running 20x8.5 front and 20x10 rear but I can't memeber the backspace needed to tuck inside fenders. I've done a search but can't find the correct response. I think its 4.5 front and 5.5 rear???? Any confirmation or correct info would be greatly appreciated!!!
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Old 02-04-2013, 07:43 PM   #2
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Re: 20" wheel backspace

Well I ordered the 4.5 front and 5.5 rear since noone had any input. Hope they fit with no issues. If anyone has any suggestions of tire size I'd appreciate it. I was thinking 245/40 front and 295/40 rear
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Old 02-04-2013, 07:51 PM   #3
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Re: 20" wheel backspace

Why such a big hurry?
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Old 02-04-2013, 08:16 PM   #4
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Re: 20" wheel backspace

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Why such a big hurry?
I wanted them this week. Bad habit of mine. I may wait on something for months but then when I decide I want it, I want it NOW!
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Old 02-04-2013, 09:05 PM   #5
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Re: 20" wheel backspace

My opinion,... the 225's don't come with enough BS up front.
I like a 5.25"-5.5" BS on a 8.5" wide wheel.
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Old 02-04-2013, 10:08 PM   #6
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Re: 20" wheel backspace

X2, agree with Keith.

As for tires, it all depends on the look you want and personal preference.... and if the truck is bagged or lowered. The tire size you mentioned, I believe, are in the range of where you want to be.... again, all personal preference.
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Old 02-05-2013, 02:11 AM   #7
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Re: 20" wheel backspace

I believe when it's all said and done it will be a 5/7 drop
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Old 02-05-2013, 04:45 AM   #8
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Re: 20" wheel backspace

do u have to narrow the rear end ..
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Old 02-05-2013, 12:02 PM   #9
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Re: 20" wheel backspace

With a 5.5" backspace on a 10" wheel, you will not have to narrow the rear end.

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Old 02-05-2013, 12:56 PM   #10
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Re: 20" wheel backspace

What if you go with a 22'' wheel with a 5.5 back spacing .
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Old 02-05-2013, 12:57 PM   #11
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Re: 20" wheel backspace

diameter doesn't matter on the back,...
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Old 02-07-2013, 03:16 PM   #12
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Re: 20" wheel backspace

TTT
Looking for more feedback
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Old 02-07-2013, 04:29 PM   #13
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Re: 20" wheel backspace

My 225s are 20x8.5 fronts with 255-40/20 toyo proxes STII tires and 20x10 with 295-40/20 toyo proxes STII rears. 4.5" backspace front and 5.5" backspace in the rear.

I need to roll the lip on my fronts, since they rub a bit when going over a bumpy turn. In my opinion, the backspacing is right on, unless you're going for hellaflush.

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Old 02-07-2013, 08:18 PM   #14
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Re: 20" wheel backspace

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Originally Posted by killthewabbit View Post
My 225s are 20x8.5 fronts with 255-40/20 toyo proxes STII tires and 20x10 with 295-40/20 toyo proxes STII rears. 4.5" backspace front and 5.5" backspace in the rear.

I need to roll the lip on my fronts, since they rub a bit when going over a bumpy turn. In my opinion, the backspacing is right on, unless you're going for hellaflush.

Roll the lip of the fenders? Is it chopping up the edge of the tires or scraping the face of the wheels at all?
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Old 02-07-2013, 11:34 PM   #15
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Re: 20" wheel backspace

It rubs the tires, not the wheels. I haven't noticed any damage to them. It only rubs every now and again. If I had 245s in front instead of 255s, it might not. It's going to depend on your drop too. I have 2.5" spindles and 2" springs, but it's at least another inch lower than I expected
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Old 02-08-2013, 04:24 PM   #16
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Re: 20" wheel backspace

I'm doing the same drop and possibly cutting 1/2 coil off too. Maybe I can get my fenders rolled prior to finishing the body work
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Old 02-10-2013, 01:37 PM   #17
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Re: 20" wheel backspace

I would try it out first before you roll the fenders. If your tires don't require rolling your fenders, you will have done it for no reason. You can always roll them afterwards. YMMW - your mileage may very
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