tire size question

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Mar 7, 2006 | 07:38 PM

#16

likethefords

Senior User

Joined: Dec 2005

Posts: 229

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From: Fargo, ND

I have 33'' tires on my 78 and still have the 3.55 s in there and it looks nice and has plenty of power. Mileage isn't to horrible either.

Mar 7, 2006 | 07:55 PM

#17

Bdox

Fleet Owner

Joined: Sep 2005

Posts: 28,609

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From: Lake Tahoe, Nevada

Quote:

Originally Posted by MBBFord

Go to broncegraveyard.com, they have a little calculation to figure out what exactally which one you need too.

Ford dealers too.

Mar 7, 2006 | 08:34 PM

#18

keithredfirebird

Junior User

Joined: Mar 2006

Posts: 66

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Here is a great site that will show what the tire size is
http://www.rgp.nl/bird/misc/wielen.htm

Mar 7, 2006 | 08:39 PM

#19

MBBFord

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Joined: Mar 2005

Posts: 8,542

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From: Louisiana

Quote:

Originally Posted by likethefords

I have 33'' tires on my 78 and still have the 3.55 s in there and it looks nice and has plenty of power. Mileage isn't to horrible either.

I know it wouldn't be bad, but if you had 31s then you would have better take off, and better gas mileage(not alot, but it'd still be better).

I have 37s on stock 3.50 gears, and it sucks for acceleration and MPG, but almost got enough to regear now.

Mar 7, 2006 | 10:47 PM

#20

1979FordF-250

Senior User

Joined: Mar 2006

Posts: 398

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From: NOR CAL

go 33's

with the 33's your highway mpg would increase because of the lower rpm, but your city would get worse because the engine would have to work harder to move the rig. your speedo would also be mostly corrected. You might even want to consider some new 4.10 gears.

Last edited by 1979FordF-250; Mar 7, 2006 at 10:50 PM.

Mar 7, 2006 | 10:57 PM

#21

likethefords

Senior User

Joined: Dec 2005

Posts: 229

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From: Fargo, ND

I hope to eventually get 4.10s, but on a limited budget right now and its doing fine as is, so it'll be awhile

Mar 9, 2006 | 10:40 AM

#22

Fordman79

Thread Starter

Lead Driver

Joined: Aug 2004

Posts: 8,942

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From: Rantoul, Illinois

Thanks for all the help on this. I think I'll go ahead and use them. I tried one on just to see how it looked and your right they do fill out the wheel wells nice.

Mar 9, 2006 | 01:34 PM

#23

jad4

Junior User

Joined: Nov 2004

Posts: 95

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From: Kalispell, MT

a good way to check how fast you are going is to use a gps. You can have someone in the passenger seat writing down what your speedo says vs what the gps says(you can't get more precise than that) and then you could put a sticker or something on your speedometer that would remind you how fast you are going.