I have a question for every inch of tire you go bigger than your stock ones what does it do to your gears. Like say I put on 18" tires with my 3.55Ls what will it be changed to thanks?

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2001 F-150 5.4L trition,
Regular cab with 8' bed
XLT with Black Clearcoat
4x4 3.55 limited slip
factory cab steps
class III tow package
Factory ordered: 12/5
recieved: 2/22

Current Mods: Ford Plastic bedliner, Bug Deflector II

 

It depends upon the height of the sidewall of your tire... check this link out. http://www.dakota-truck.com/TIRECALC/tirecalc.html

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1998 F150 S/C
4.6 V8
Flowmaster 40 muffler
Sony CDX-C7850 CD Player
2 12" DEI Competition subs
DEI 1100D amp
4 kicker Impulse 5x7
Legacy LA360 amp
Expy console

SOON TO COME!!
Sony XE-744 Equalizer

[This message has been edited by Sandman_A_C (edited 03-24-2001).]

 

18" tires! WHOA! are you running like 5 series rubber or something?

The smallest tires you will find on a 16" wheel is around 24-26" tall.

Now if your are talking wheel size, how does that matter? It is not the wheel that determines the height, but rather the tire.

Browse most any tire manufacturer's website for the size of the tire. Like http://www.bfgoodrichtires.com

Here is a link to a spreadsheet I did online to help figure out your gears:

http://members.home.net/mjbobbitt/f150/tirecalc.html

 

Gear ratio is independent of tire size. It is the number of turns the driveshaft makes for each turn of the rear wheels. Increasing overall tire (not wheel) diameter has the same effect on speed in gears as lowering the numerical ratio. What tires are you running now and to what tires are you planning on changing?

 

I have stock wheels and tires good year 16". Want to get tires with 18" with same width

------------------
2001 F-150 5.4L trition,
Regular cab with 8' bed
XLT with Black Clearcoat
4x4 3.55 limited slip
factory cab steps
class III tow package
Factory ordered: 12/5
recieved: 2/22

Current Mods: Ford Plastic bedliner, Bug Deflector II