2004 - 2008 F-150

Biggest tires on 07 KR with 20's?

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Old 07-29-2015, 09:11 PM
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Biggest tires on 07 KR with 20's?

Hey folks, I have an all stock 2007 King Ranch with the factory 20" rims. I currently have Michelin radials on it in size 275/55, I need new tires and just wondering if BFG Rugged Terrain's in 275/60 will fit or if they will rub in that size. Any help would be appreciated!
 
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Old 07-30-2015, 09:12 PM
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Do a search this is a common topic.

Anyway, quick answer is yes the 275/60r20 will fit no problem, I have that now on my truck with no level.

305/55r20 look nice and is probably my next tire with different wheels, 20x9 with 18mm offset. I hear that will work without a level as well.

If I decided on a 2" level, I'd go 295/60r20.
 

Last edited by Hawkz28; 07-30-2015 at 09:15 PM.
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Old 07-31-2015, 12:43 PM
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Originally Posted by Hawkz28
Do a search this is a common topic.

Anyway, quick answer is yes the 275/60r20 will fit no problem, I have that now on my truck with no level.

305/55r20 look nice and is probably my next tire with different wheels, 20x9 with 18mm offset. I hear that will work without a level as well.

If I decided on a 2" level, I'd go 295/60r20.

cool thanks for the info!
 
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Old 08-04-2015, 07:24 PM
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In case this is helpful to others who find this thread (now) or in the future, I've used http://www.discounttire.com/dtcs/infoTireMath.do to compare tire sizes for many years. Regarding the sizes you've mentioned:

275/60R20 --> 32.99"
305/55R20 --> 33.21"
295/60R20 --> 33.94"
275/65R20 --> 34.07"

I'm currently running Goodyear Wrangler AT/S LT275/65R20 on my 2004 (2WD) with the 2" front leveling kit. You can get away with 34" tires but when you get to 35" you'll almost certainly have rubbing issues with or without the level.

And don't forget that putting bigger tires will mean your speedometer is lying to you unless you get it recalibrated. I didn't ... not a big deal to me. Start with your stock tire size (for which your truck was calibrated) and then compare it to one of your larger tire sizes. Often, I'm going about 70 when my speedo says 65. Accordingly, it'll change your mileage (show less than actual) and any calculated gas mileage (make it seem like you're getting worse than you really are).
 
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Old 08-09-2015, 12:48 PM
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Originally Posted by GordoPanocho
In case this is helpful to others who find this thread (now) or in the future, I've used http://www.discounttire.com/dtcs/infoTireMath.do to compare tire sizes for many years. Regarding the sizes you've mentioned:

275/60R20 --> 32.99"
305/55R20 --> 33.21"
295/60R20 --> 33.94"
275/65R20 --> 34.07"

I'm currently running Goodyear Wrangler AT/S LT275/65R20 on my 2004 (2WD) with the 2" front leveling kit. You can get away with 34" tires but when you get to 35" you'll almost certainly have rubbing issues with or without the level.

And don't forget that putting bigger tires will mean your speedometer is lying to you unless you get it recalibrated. I didn't ... not a big deal to me. Start with your stock tire size (for which your truck was calibrated) and then compare it to one of your larger tire sizes. Often, I'm going about 70 when my speedo says 65. Accordingly, it'll change your mileage (show less than actual) and any calculated gas mileage (make it seem like you're getting worse than you really are).
good numbers to know, thanks!
 



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