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18" vs 20" wheel question?

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Old Dec 19, 2006 | 05:18 PM
  #1  
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18" vs 20" wheel question?

I currently have factory 18"X 7.5" wheels on my '05 150 FX4 4X4 and have a chance to trade for some 20" Factory wheels off of another '05 f-150 FX4. The stock 275/65/18 tires just don't look big enough after leveling the front and I have been wanting some larger tires to fill in the gap between the tires and the fenders. Most of the larger tire sizes recomend a wider wheel.
How wide are the factory 20's?
Should I make the trade?
 
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Old Dec 19, 2006 | 05:20 PM
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the ride will be stiffer with 20's, in fact someone started a post on it a bit ago https://www.ford-trucks.com/forums/5...20-wheels.html
 

Last edited by KansasJoe; Dec 19, 2006 at 05:24 PM.
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Old Dec 19, 2006 | 06:08 PM
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I have an 06 Lariet with factory 20" wheels and Pirelli Scorpions and I feel the ride is extremely stiff. The tire profile between the wheel and the road is 1"between the 18 and 20 inch wheels. This seems to make a big difference. Good luck!
 
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Old Dec 19, 2006 | 07:33 PM
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i've got 18's and the ride seems pretty soft to me. 20's look cooler to me ...

-Matt
 
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Old Dec 19, 2006 | 10:56 PM
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The factory 20" wheel is 8.5" wide. Too bad Ford dosen't make a 18x8.5, that's what I'd want.
 
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Old Dec 19, 2006 | 11:09 PM
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I got 20's and find it soft, and responsive,
Go for it
 
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Old Dec 20, 2006 | 12:04 AM
  #7  
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You should be aware that your tire sizes are extremely limited with that 20" hole. If the ride doesn't matter and the extra cost of the larger tires doesn't matter then go for it.

Only 4Ply reinforced tires are available in that 20" hole, you can get 10 ply tires in the 18" (275/70/18) so if you plan on doing any towing, stick with the 18s.
 
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Old Dec 20, 2006 | 12:53 AM
  #8  
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big rims are for rappers

stick with the normal size rims (18" or less) to keep the costs of things down when you have to buy tires.
 
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Old Dec 20, 2006 | 07:42 AM
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I couldn't agree more. It cost me 1700$ to put tires on my 18" wheels. I wasn't happy. I don't want to know what the 20's would cost...
 
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Old Dec 20, 2006 | 08:33 AM
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As far as wheel size, thats up to the individual. However since you have 18s and there are many more tire options for 18s, then I would use my money for a higher quality tire that is the size you want. Also people have been putting on wider tires than recommended for forever without any issue. If you go to your local mom and pop tire shop or one like 4wheelParts, they will tell you that you can put on a much wider tire than recommended. This also gives some more protection to your rims. Obviously there are limits to everything, but dont worry about exceeding recommendations if a tire shop says its ok.
 
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Old Dec 20, 2006 | 09:40 AM
  #11  
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There's hardly been any different 18" tire sizes either until just recently. I think about the same selection for 20" tires now too?

To answer your original question, if you plan to run the stock tire size on the 20's you trade for, they will not really fill out your wheelwell anymore than your current 18's. Because both tires (stock 18" and 20") have about the same overall diameter, 32".
 
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Old Dec 20, 2006 | 01:37 PM
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The larger the wheel the smaller amount of tire between rim and road. Stick with your 18'' you'll have more tire between road and rim.

20'' belong on a car not a truck.
 
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Old Dec 22, 2006 | 08:47 AM
  #13  
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4doorsr, man you got screwed on the tires. Check out discount tires or tirerack next time, you should be able to save $1000.00 or more! I saw the Pirelli 20" tires for about $130.00 a tire at tirerack!
 
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Old Dec 22, 2006 | 08:57 AM
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Actually there are more tire options available in 20 inch than in 18 inch. Nobody makes an 18 inch rim except ford.
 
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Old Dec 22, 2006 | 11:23 AM
  #15  
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I bought some 20" with the Pirelli's.I did not find it much harsher than the 18". I have upgraded to 285/55R20 BFG KO's $$$$$$$$$$$$$$$ Ride is still extremely comfortable with the Tri-Guard sidewall and an E load rating. I definately feel safer in the snow with the BFG product. Just had a hard time justifying the cost.
 
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