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Author Topic: Tire Calculator  (Read 22018 times)

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Offline IowaEagle

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Tire Calculator
« on: December 16, 2007, 06:52:52 PM »
Jurjen found this handy tire calculator to help with your decision making.

http://www.1010tires.com/TireSizeCalculator.asp?action=submit&reset=yes
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Offline milliard431

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Re: Tire Calculator
« Reply #1 on: January 23, 2009, 08:13:22 PM »
 225 / 65/ 15 matches tire hgt dementions exactly!!!! for oem Eagle tires 195/75/15

Offline AMCKen

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Re: Tire Calculator
« Reply #2 on: June 12, 2009, 12:24:30 AM »
Wasn't the factory upgrade a 205 or 215 65/15, not 225?
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Offline Bird-o-Prey

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Re: Tire Calculator
« Reply #3 on: June 12, 2009, 10:11:56 AM »
The main concerns for tire size (without considering mods to the wheel well) are width and outside diameter.  I believe, and please correct me if I am wrong, that I read somewhere else on the nest that the max width for tires (without rubbing) is 225.  You can play with the rim and sidewall dimensions as much as you want as long as the overall diameter stays within about 5% of original.  Too small or big and you will get an incorrect reading from the speedometer.  Although the speedo is hooked to the tranny,  it is calibrated for a certain tire size.  So the tranny will be doing 55mph, but the wheels may be moving faster or slower depending on diameter.

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Offline IowaEagle

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Re: Tire Calculator
« Reply #4 on: June 12, 2009, 11:02:28 AM »
Our speedos are hooked to the transfer case -- but yes, you are correct.
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Offline Eagle Kammback

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Re: Tire Calculator
« Reply #5 on: June 12, 2009, 08:50:58 PM »
Kammback has 205 Firestones, wagon has 215 BFGs, no rub  :)
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Offline AMCKen

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Re: Tire Calculator
« Reply #6 on: June 13, 2009, 05:42:45 PM »
My latest SX4 had 215/75s on it and they didn't rub, but the PO may have done some trim trimming that I haven't noticed yet. They're about 6% oversize.
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Offline Route 66 Rambler

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Re: Tire Calculator
« Reply #7 on: June 13, 2009, 07:48:37 PM »
Wasn't the factory upgrade a 205 or 215 65/15, not 225?


Yeah, the factory spec for the sport tires is 215/65 Goodyear Eagle GT.  That's what I went for on my Kammback.  They're not huge or anything, but definitely much beefier than stock.  There is plenty of room for more tire, though.

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Offline milliard431

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Re: Tire Calculator
« Reply #8 on: June 14, 2009, 10:38:35 AM »
Hey Wizard, The ( 75 ) is why you might get some rub, I want to fill those old oversized wheel wells as much as possible without cutting or lifting anything so when the time comes I'll go with the 225/65/15's. I got a set of those Jeep hurricane style wheels on auction but they will need a lot of work.

Offline Lynx_Gen

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Re: Tire Calculator
« Reply #9 on: August 06, 2009, 12:38:54 AM »
Im runnin 235/75/15s i think theres a bit of lift but the springs r so sagged its prolly null... I custom aligned mine 2 set the tires dead center of the wheel wells... I get just a hint of rubbing when im at a steering angle where the outter wheel edges touch the inner lower edge of the wells in its sweep... If i raise it about an inch, or suck those corners back about 3/8 of an inch im sure theyd clear..  See my project thread 4 pics as proof..  Lol i should hav new springs n shocks on order 2morro.. With those they shld clear with ease well enough im speculating!
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Offline amc78concord

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Re: Tire Calculator
« Reply #10 on: November 28, 2009, 08:45:57 PM »
So, would the 225/65/15 fit on the stock Eagle rim?
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Offline Route 66 Rambler

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Re: Tire Calculator
« Reply #11 on: November 28, 2009, 10:02:45 PM »
I think they would, there's plenty of clearance under my car...
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Offline Lynx_Gen

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Re: Tire Calculator
« Reply #12 on: January 04, 2010, 12:04:33 AM »
if i ever get around to afford new tires i'll try the 225/65/15 s n see how they do... nice thing is i work at a fountain tire so i can have swapped for a bit smaller if needed. With my 235/75/15s they just barely rub, and just a hair or two smalller should be good...
For all your vac/emissions/computer related and such stuff, see here:
http://home.sprynet.com/~dale02/list.htm

"Why fix your brakes? all they do is slow you down?"
"The nut behind the wheel is loose..."
1982 AMC Eagle wagon limited, Auto, 258, a constant work in progress... (needs tranny repaired/replaced)
1980s ish tent trailor... needs a 6" lift and re-wiring, and wiring harness fabbed for the eagle.
1986 Merkur XR4Ti, 2.3T.. Now gone, R.I.P. I have the engine, harness and ECU.. the rest donated to a good cause.. Fireman practice (they light it on fire then put it out!)
1985 Merkur XR4Ti.. the 2013 demo derby car - compact car class (hoping to find old buick skylark bumper to put on it! BAHAHAHAA!!!)
1986 Nissan 200sx, notch, 5spd, ca20e.. my toy. patiently waiting for engine swap and various mods and goodies... my little road legal go cart for auto-x and drift etc.
91 pimped out dakota sport 4x4.
95 ford ranger (with the 86 merkur turbo engine, not quite done yet.)
97 Tahoe
2001 ford windstar

92 Yamaha warrior (quad-350) engine broke, again.. >.<

2001 kawasaki KX.. WEEEEEEHAAAA! (my main toy till next spring, then its trade in with Income tax mula for a 250, but prolly gona be a dual sport, so maybe even a bigger bike... still undecided)
1982 Honda Magna 750(V45)

1980s Kawahara BMX! custom bars, gt 3spkoe rims, ORYG(Gyro), etc etc

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Re: Tire Calculator
« Reply #13 on: January 12, 2010, 11:01:01 PM »
I'm curious about the offset... I went to a tire place to look at rims today and I told them "Jeep" wheels to keep it simple. I told them it was for an 80's style 5-lug Jeep.... then he asked a bunch of questions and I ended up telling him it was an Eagle and he looked up some info on his handy dandy computer and he said our Eagles have a front wheel drive offset...

is this true? or was he mistaken? I know my Blazer had a wierd offset and I hated it... but I never remember my SX4 giving me any issues. I could simply slap any Jeep wheel on and go.

My Eagle is a 1980 model... does that make a diference?
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Offline txjeeptx

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Re: Tire Calculator
« Reply #14 on: January 12, 2010, 11:11:53 PM »
You sure the genius wasn't thinking Mitsu-Eagle? They are front drive.
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