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-   2005-2009 S197 Appearance Section (https://mustangforums.com/forum/2005-2009-s197-appearance-section-122/)
-   -   20" rims (https://mustangforums.com/forum/2005-2009-s197-appearance-section/544958-20-rims.html)

all2qwik 06-18-2009 10:53 PM

my 06 handles great and looks great on 20's

mygt500 06-19-2009 06:24 AM

Here are my low profile 20's and yes you feel the potholes more and have to slow down greatly for railroad tracks and speedbumps etc......I have 30 series all around and like War Machine 115 I am getting taller tires in the future when the BFGoodrichs are toast. I love the handling and stick to the 285/30/20's in back and the wide 265's up front but the tires in front are NOT even 27 inches tall:icon_doh:.....you live and learn but they do IMO look great and I have NO drop (yet):icon_wink:

see the small side wall in front (I have had no issues but am always careful and know the areas that I drive)
http://i154.photobucket.com/albums/s...m/DSC_0104.jpg

http://i154.photobucket.com/albums/s...m/DSC_0107.jpg

http://i154.photobucket.com/albums/s...m/DSC_0109.jpg

GM EATER 06-19-2009 08:26 AM

another couple of sharp cars with 20's !!

Poco 06-19-2009 08:45 AM


Originally Posted by GM EATER (Post 6290542)
The Dark Horse / Speedstar Saleen wheels look great! Saleen used the 20" wheels with great success I guess everyone has different feel for the road. My S-281 handles like it's on rails. What hood are you using and how much did it cost? Looks great! The GT brakes get lost though, in those rims. Time for a big brake kit to stop all that reciprocating mass!

Reciprocating mass means moving parts like the engine...crank shaft,connecting rods and cams.Rotational mass is what your talking about..flywheels,wheels and tires.I got an explanation from my engineer daughter.

tim.route 06-19-2009 12:10 PM


Originally Posted by Starfire (Post 6290076)
EH? My 20's have a lot more traction then the stockers, they also increased handling a lot!

Put the same height and width tires on a 16" or 17" wheel, 20" would be heavier, rougher, and less traction

Starfire 06-19-2009 12:21 PM


Originally Posted by tim.route (Post 6291710)
Put the same height and width tires on a 16" or 17" wheel, 20" would be heavier, rougher, and less traction

If you put the same height (35) and same width (255) your ride would be the same since the sidewall is the same, also if you have the same width your traction would be the same, plus you'd have way to thin of a tire for a mustang on that size rim, it would look silly and your speedo would be way off. Granted some 20's are heaver but the stock wheels are no light weights either.

If you wanted to get real technical since the radius is smaller the rate at which the circumference of the wheel would vector away from the tangent would be higher which would in turn of course be translated to the tire and due to the vector rate of a small wheel your contact patch would be ever so slightly smaller causing a reduction in traction, unless you ran a lower PSI to compensate for that, it's nothing that will really be noticed in the real world though(at least I don't imagine so) and that is WAY to much math for friday!

CutterWolf 06-19-2009 12:56 PM


Originally Posted by Starfire (Post 6291738)
If you put the same height (35) and same width (255) your ride would be the same since the sidewall is the same, also if you have the same width your traction would be the same, plus you'd have way to thin of a tire for a mustang on that size rim, it would look silly and your speedo would be way off. Granted some 20's are heaver but the stock wheels are no light weights either.

If you wanted to get real technical since the radius is smaller the rate at which the circumference of the wheel would vector away from the tangent would be higher which would in turn of course be translated to the tire and due to the vector rate of a small wheel your contact patch would be ever so slightly smaller causing a reduction in traction, unless you ran a lower PSI to compensate for that, it's nothing that will really be noticed in the real world though(at least I don't imagine so) and that is WAY to much math for friday!


Ouch, my brain hurts now. 50 lash's with a wet noodle for you for all that real world math on a Friday......:)

GM EATER 06-19-2009 01:15 PM

I'll go with your daughter rotational mass works! 20's Rock!

Starfire 06-19-2009 02:29 PM


Originally Posted by CutterWolf (Post 6291819)
Ouch, my brain hurts now. 50 lash's with a wet noodle for you for all that real world math on a Friday......:)

LOL I know, that was about the extent of my brain power for the day :)

Just seems there has been a lot of 20's are no good threads around lately. My switch from 18" Stock polished bullets to my 20" Konig Beyonds (Incidentally I'm the car of the month on there web site. Woot!!) I gained a ton of handing, I'm sure it was wheels AND tires, and I don't feel I lost any power, but I did gain traction with my wider tires which sometimes feels like a power loss since I don't spin as easy.

tim.route 06-19-2009 07:55 PM


Originally Posted by Starfire (Post 6291738)
If you put the same height (35) and same width (255) your ride would be the same since the sidewall is the same, also if you have the same width your traction would be the same, plus you'd have way to thin of a tire for a mustang on that size rim, it would look silly and your speedo would be way off. Granted some 20's are heaver but the stock wheels are no light weights either.

If you wanted to get real technical since the radius is smaller the rate at which the circumference of the wheel would vector away from the tangent would be higher which would in turn of course be translated to the tire and due to the vector rate of a small wheel your contact patch would be ever so slightly smaller causing a reduction in traction, unless you ran a lower PSI to compensate for that, it's nothing that will really be noticed in the real world though(at least I don't imagine so) and that is WAY to much math for friday!

Are you an idiot? I meant that the tires were the SAME width and height. Never said anything about aspect ratios and such. I mean measure the tire you put on your 20" with a tape measure and then find a 16" or 17" tire that is the same. You would have the same circumference and width but with more side wall.


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