towing with larger rims
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Senior Member
Joined: May 2000
Posts: 252
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From: Los Angeles, CA, US
towing with larger rims
I just wanted to know how my towing capacity would be affected if I went with 22" rims and 305/45 tires. I have a 1998 Expedition 4wd with 3.73 gears and 5.4L engine. How much weight would I still be able to tow safely? Thanks for the help.
Robert
Robert
Senior Member
Joined: Mar 2001
Posts: 4,506
Likes: 6
From: Puyallup, WA
You'd be limited to the weight limits on the new 22" tires. I can't imagine that these would have an actual "LT" type of load rating like a "C" or "D". They will probably be "P" rated, which is a standard Passenger car rating and would limit you to around 2200 lbs per tire (this is totally just a guess on my part!!)
The next part of the equation is how much taller these 22" are compared to stock. If they are still around 31" tall, you should be fine on the gears. If they are taller, then your gear ratio will "change" too. maybe something like 3.55 or something.......
Probably won't hurt you too bad on towing. It'll change your speedo and odometer readings however.
It seems that Ford subtracted 500 lbs from the max towing rating on the F150's if you were running the 17" wheels compared to the 16" wheels...... So, maybe you will need to subtract 750 lbs or so.............
The next part of the equation is how much taller these 22" are compared to stock. If they are still around 31" tall, you should be fine on the gears. If they are taller, then your gear ratio will "change" too. maybe something like 3.55 or something.......
Probably won't hurt you too bad on towing. It'll change your speedo and odometer readings however.
It seems that Ford subtracted 500 lbs from the max towing rating on the F150's if you were running the 17" wheels compared to the 16" wheels...... So, maybe you will need to subtract 750 lbs or so.............
Last edited by MitchF150; Aug 20, 2001 at 08:19 PM.
Member
Joined: Jul 2000
Posts: 19
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From: Hialeah Fl us
Towing with my 23"
I have a 99 f-150 with 23" wheels. The towing does get affected a little I tow 26 ft Mako with twin engines all pkg weight is about 4800 lb-5000. it really sucks in towing. I had to upgrade my gears to 4:10 nowit tows awsome & the truck runs better. If you notice at 65 mph your rpms are over 2000 thats not normal now t 65 i'm way under 2000 rpms.. Change your gears.. They go for around $450.00.
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Senior Member
Joined: May 2000
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From: Los Angeles, CA, US
4.2 Power,
Do you have any pictures of your truck? Is so, could you post some or email them to robertc128@hotmail.com
Also, how is the ride with the 23"s? Is it very stiff? Also, where do you get new gears? Thanks for the help.
Robert
Do you have any pictures of your truck? Is so, could you post some or email them to robertc128@hotmail.com
Also, how is the ride with the 23"s? Is it very stiff? Also, where do you get new gears? Thanks for the help.
Robert
Member
Joined: Jul 2000
Posts: 19
Likes: 0
From: Hialeah Fl us
23"
Robert my truck rides fine Almost like stock. I dont have pictures online yet. I had 20's before & when I got the 23's there was'nt any diffrence just the $$$ Very expenssive I bare the day I need new tires!! I got the gears at my Local performance shop G.A.W. Racing. I think they have a website not sure.
Ray
Ray