Ok guys - show me your wheels!


FBA

GT Owner
Dec 5, 2010
1,672
31.022340° N / 44.846191° W
Yes, I know - however, many times, those specs are NOT exactly the same as the manufacturer's site, as I've seen in the past, and then you have the issue of the Tire rack not carrying certain tires makes...like Nitto for example, which I have on my Viper and my Z06...
 

nota4re

GT Owner
Mark IV Lifetime
Le Mans 2010 Supporter
Feb 15, 2006
4,293
I went to the Michelin site and checked the tire rotations per mile, then converted the result to inches (rolling diameter) and divide by PI to get my radius. At 770 Rotations/mile, the overall diameter comes to exactly 26.19238". That's providing that what they list as rotations/mile is precise - and this was for the 255/35/20. Now, when I go the GY site, they list the overall diameter as 26.3" for the OE 235/45/18 GY Eagle F1 tire. So I see the net difference at .10762", which is marginal, IMO. If I'm wrong in my thinking...let me know please.

Yeah, I don't think "backing-in" from tire rotation per mile is precise enough - maybe for many reasons but not the least of which is that they round that number - with a significant effect on precision.

The overall diameter is really easy to figure out. (Super simple to make yourself a lttle excel spreadsheet.)

Overall Diameter = Diameter of the rim + height of the sidewall + height of the sidewall

Diameter of the rim = Easy.
Height of the sidewall = Simply expressed as percenatge of treadwidth

Example: 235/45-18
Overall dia = 18" + (45% of 235) + (45% of 235)... but don't forget to convert each of the (45% of 235) from mm to inches
 
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FBA

GT Owner
Dec 5, 2010
1,672
31.022340° N / 44.846191° W
Always found it quite bizarre the way tire manufacturers state size as a combination of metric and imperial...:confused
 

AZSTAD

GT Owner
Mark II Lifetime
Feb 4, 2008
583
Arizona
View attachment 19853Here is a shot of a "strut" wheel, on a pilot sport 335/30/zr20. Car was an 05, Black no stripe, for sale in Vegas
in Sept 09. Many other strut upgrades...front grill, speaker covers, side vents, rear grills, etc...anyone know what happened to this car?

I would love to know as well. I considered purchasing this black, no stripe car. It was owned by one of the brothers who owned a second-tier casino in town. In the end, I decided not to because it had too much "bling" in my opinion. Many of the custom, Strut chrome grills I would've wanted replaced.

Anyone know what happened? Anyone? Anyone?...Bueller?
 

Superfly

HERITAGE GT OWNER
Mark II Lifetime
Jun 23, 2008
2,210
Edmonton, Alberta
Always found it quite bizarre the way tire manufacturers state size as a combination of metric and imperial...:confused

No kidding eh?

Check out this site for tire diameters http://www.1010tires.com/tiresizecalculator.asp Much easier to have the calculations done for you than trying to whip out the calculator every time.

Also FBA, don't forget that in order to lower your car, you're going to need some of Alex's adjustable perches, or some Penske (or there's a few other companies now too) adjustable coilovers as the stock units on the GT aren't adjustable.
 

FBA

GT Owner
Dec 5, 2010
1,672
31.022340° N / 44.846191° W
I see those are two completely different solutions. I found the Penske coilovers online, which also require springs, but am guessing that this is a better solution with a more linear travel...also, can't find any info or links for Alex's adjustable perches...does anyone have that info and which would be the better solution?
 

ROCMAN

Big Dawg!
Mark IV Lifetime
Mar 9, 2006
1,625
USA
I do not condone the use of aftermarket wheels on any car. :biggrin
 

Superfly

HERITAGE GT OWNER
Mark II Lifetime
Jun 23, 2008
2,210
Edmonton, Alberta
I see those are two completely different solutions. I found the Penske coilovers online, which also require springs, but am guessing that this is a better solution with a more linear travel...also, can't find any info or links for Alex's adjustable perches...does anyone have that info and which would be the better solution?

Alex sells both. Check out http://www.fordgtforum.com/forums/showthread.php?21665 for info.
 

anya

NGT,GT/GTX1 Owner
Mark II Lifetime
Jan 31, 2008
178
Seattle
I agree, however, the Dymags do look pretty good.....
 

FBA

GT Owner
Dec 5, 2010
1,672
31.022340° N / 44.846191° W
What exactly do you agree with? I'm lost now...
 

shelbyelite

PERMANENTLY BANNED
May 10, 2007
1
View attachment 19853Here is a shot of a "strut" wheel, on a pilot sport 335/30/zr20. Car was an 05, Black no stripe, for sale in Vegas
in Sept 09. Many other strut upgrades...front grill, speaker covers, side vents, rear grills, etc...anyone know what happened to this car?

I wonder.......
http://cgi.ebay.com/ebaymotors/ws/e...78&_sacat=See-All-Categories&_fvi=1&viewitem=
 

2112

Blue/white 06'
Mark II Lifetime
 

Black GT

GT Owner
Mark II Lifetime
Jan 2, 2006
771
 

fjpikul

GT Owner
Mark IV Lifetime
Le Mans 2010 Supporter
Jan 4, 2006
11,711
Belleville, IL
You might look for posts by StormCat and look at the custom wheels he had done. Pretty trick.
 

MTV8

GT Owner
Mark II Lifetime
Jul 24, 2010
1,021
Houston Texas

I believe that car was in Houston prior to being listed for sale.
 

FBA

GT Owner
Dec 5, 2010
1,672
31.022340° N / 44.846191° W
So - I ended up going with the ADV1.10's in matt black in a 20 x 13 and 19 x 10, using the new Michelin Pilot Super Sport. front rolling diameter is almost bang on to stock and rear is 3/4" shorter. I'm going to order the adjustable perches from Alex and lower about an 1" t close up the gaps. She should look quite hot. Will post pics in 6 weeks when they arrive!
 

dtomaso1

GT Owner
Dec 6, 2006
184
Phoenix, Arizona
Hi Shelby,

The VINs match, so we have the same car. The wheels and yellow calipers remain, and from the photos, the silver trim is gone. Looks like exhaust is different. As I recall, the internal Ford service report on this one was interesting. I'd be curious if you can comment on that internal "report".

DT
 

2112

Blue/white 06'
Mark II Lifetime
I'm going to order the adjustable perches from Alex and lower about an 1" t close up the gaps.

You might want to inquire about the adjustable coilovers. I got the single adjust which were pretty affordable. Allows you to tailor your ride height just how you want it. IMO the front needs to be dropped more than the rear.
 

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FBA

GT Owner
Dec 5, 2010
1,672
31.022340° N / 44.846191° W
Speaking to Alex, I asked about both options, but he mentioned that there's really no difference in my application, which is strictly for street use and will be lowered no more than 1.25" anyway...

How low did you end up going from stock?
 

2112

Blue/white 06'
Mark II Lifetime
I am in the process of installation now. Plan is 1.25" in front and .75" in the rear. I also plan the occasional track day and wanted the enhanced responsiveness and adjustability.