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What's the widest tire someone has fit on the stock 20 inch rim? I figure a 275mm 0r 295mm (40 series) tire should fill out the rear nicely while you're limited to a 255/40r20 on the front end.
 

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285 tops

295 will give too much side wall bulge.

Personally I feel 275 is the best from what I've heard.

Or, you could get your wheel widened and run whatever you want.
 

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vvv90

what are you going to run when you go through those AS's???
come to think of it...
that creates another question...
aren't you through them yet? :biggrin:
 

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cbutler32 said:
what are you going to run when you go through those AS's???
come to think of it...
that creates another question...
aren't you through them yet? :biggrin:

HA! .... Yeah, I'm surprised I'm not yet. That ESP sure does a good job!


Since the AS's are all weather tires, I might just keep them for the winter, and then install some Ultra High Performance tires....275 in back, 255 in front.

I do REALLY hope Nitto of BFG starts making some drag radials in 20's....I'd love to be the first to break 12.9 with a stock motor. :D
 

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Be aware on the 06 models with the tire monitor sensors that if it is like my c5 corvette if you go much outside of stock diamater it will throw a code for the wheels and eventually go to close loop if you don't correct it.

Salty
 

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I am runing 275/40YR20 Pirelli Pzero Rosso Asimmetrico in the rear. I have had no problems on the stock SRT-8 wheels.
I removed the All Season Goodyears, to save some tread for the Chicago winter.
 

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ReCoRd TiMe said:
Hankook makes a pretty good tire “VENTUS”, have them on my F150 SVT,
don’t know if they make the size.
Hankook surely does make that size, I have them on my C all around. 275/40/20 Ventus ST RH06 (W) rated tire. The tire is as smooth as the OEM without the floaty feel.
 

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Front?

I've seen 275's in the rear and they look awesome. I know the front diameter is limited but has anyone tried a 275/40R20 (28.6 inch diameter)? You could run the same combo all the way around for easy rotations.
 

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psaltonstall

that is a great point!
anyone have a problem yet?
Motohead any problems with the sensors and codes?
Thanks guys!
great stuff!
 

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WD knows of some place that can widen our factory rims, I'd like to add an inch or two (I can't wait to hear the jokes)
 

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jketron...

you'll be the 1st to run with 300+ plus on yours...
with all that power... :biggrin:
 

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No problems

I have only run the 275's in the rear, I maintained the stock All Season 245/45 Gooyears in front.
I have had no issues. I re-used the stems for the air pressure monitoring system. The system accurately reflects the correct pressure.
I have not had any trouble codes from the ECM. I did have to try several tire places that could actually mount 20's.
BTW, your can still 'break loose' the 275 Pirelli's without much trouble.
 
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