Big/tall tires?

[Koverboy1911]

Nice, thanks! Is that stock suspension height?

Any issues with abs or traction control with that big of a difference between the front and back?

D

It's lowered on BMR springs and Eibach shocks/struts. No issue with traction or ABS.

Sponsored

 

[Koverboy1911]

Looks a lot nicer than I thought it would.

Thanks!

 

[Neggytive]

I run at the texas mile.

What do you do for gearing and tires to get the top speed up?

 

[Katastrophe]

Any chance you have pictures of this setup?

Ugh, I went through all my pictures and they must be somewhere on my old PC? I only have my stock setup photos and the photos of the wheels/tires in the boxes while I was in the middle of parting the car out prior to selling it. I'm actually bummed I can't find any ON THE CAR because the setup looked KILLER.

My car had a near EXACT setup to this one. Same 20x9 + 20x10 CS40 wheels (including the finish)...the only difference is, I had a Sterling Gray GT/CS (not a GT500) and my rear tires were 295 (this car has 305 rear). Nearly IDENTICAL stance, though.

More pics here, if you want:

2013 Ford Shelby GT500 Coupe 20th Anniversary Stock # 222969 for sale near Edgewater Park, NJ | NJ Ford Dealer

 

[Cz_Ziemniak]

Ugh, I went through all my pictures and they must be somewhere on my old PC? I only have my stock setup photos and the photos of the wheels/tires in the boxes while I was in the middle of parting the car out prior to selling it. I'm actually bummed I can't find any ON THE CAR because the setup looked KILLER.

My car had a near EXACT setup to this one. Same 20x9 + 20x10 CS40 wheels (including the finish)...the only difference is, I had a Sterling Gray GT/CS (not a GT500) and my rear tires were 295 (this car has 305 rear). Nearly IDENTICAL stance, though.

More pics here, if you want:

2013 Ford Shelby GT500 Coupe 20th Anniversary Stock # 222969 for sale near Edgewater Park, NJ | NJ Ford Dealer

Shweet, appreciate it

 

[jdenis43]

Velgen wheels website has a ton of pictures with 20 inch rims and bigger tires.

 

[robvas]

I saw a S550 GT500 with 21" wheels on it somewhere

https://www.mustang6g.com/forums/th...e-first-21-signature-wheel-2020-gt500.139858/

 

[Crew4991]

Get a beer, some 24 inch rims, some spacers and call it a day.

Also call it a Raptor.

 

[dk_ace]

Get a beer, some 24 inch rims, some spacers and call it a day.

Also call it a Raptor.

I was hoping for more sidewall

D

 

[Cauf E. Bean]

I assume (you've been warned!) that changing tire radius is going to impact the speedometer accuracy. Is there an easy way to adjust this from within the cabin (i.e., prosumer or professional using special codes or sequences within the system to access a series of special menus that will allow for adjustments,) or does this require using Forscan software or engine adjustment via the ECU Hack?

I ask because for a bit now my Waze App has shown me consistently driving 2-3 mph faster than my speedometer does; researching (e.g., a google search) shows that Waze has a margin of error in the 2-3 mph range, so I wasn't too worried about it. However, this thread popped up and it got me to thinking about it all over again. Anyone have any experience with this type of adjustment? Mathematically it should make a difference, but given the usual changes we see in our hobby of just an inch or 2-inches larger, the impact is pretty small:

Why changing tire size matters:

• The speedometer is calibrated based on the rotations of the tires and the vehicle's distance traveled.
• When you increase the tire size, the vehicle travels a greater distance per tire rotation, but the speedometer is still calibrated for the smaller tire size.
• As a result, the speedometer will be inaccurate, and it will show a slower speed than what you're actually driving.

Why it might matter enough to get it adjusted: if moving from an 18" tire to a 20" tire, the speed of the vehicle will change by a factor of 1.11 (a 11% increase). So if you're in your sexy mustang doing 70 mph on the freeway in accordance with the speed limit sign, in reality you're travelling at 78 mph. And if you're thinking you're only 3 miles over the speed limit, you're really doing something in the 80+mph range.

We definitely need a handy way to adjust speedometers, easily.

 

[robvas]

I assume (you've been warned!) that changing tire radius is going to impact the speedometer accuracy. Is there an easy way to adjust this from within the cabin (i.e., prosumer or professional using special codes or sequences within the system to access a series of special menus that will allow for adjustments,) or does this require using Forscan software or engine adjustment via the ECU Hack?

I ask because for a bit now my Waze App has shown me consistently driving 2-3 mph faster than my speedometer does; researching (e.g., a google search) shows that Waze has a margin of error in the 2-3 mph range, so I wasn't too worried about it. However, this thread popped up and it got me to thinking about it all over again. Anyone have any experience with this type of adjustment? Mathematically it should make a difference, but given the usual changes we see in our hobby of just an inch or 2-inches larger, the impact is pretty small:

Why changing tire size matters:

• The speedometer is calibrated based on the rotations of the tires and the vehicle's distance traveled.
• When you increase the tire size, the vehicle travels a greater distance per tire rotation, but the speedometer is still calibrated for the smaller tire size.
• As a result, the speedometer will be inaccurate, and it will show a slower speed than what you're actually driving.

Why it might matter enough to get it adjusted: if moving from an 18" tire to a 20" tire, the speed of the vehicle will change by a factor of 1.11 (a 11% increase). So if you're in your sexy mustang doing 70 mph on the freeway in accordance with the speed limit sign, in reality you're travelling at 78 mph. And if you're thinking you're only 3 miles over the speed limit, you're really doing something in the 80+mph range.

We definitely need a handy way to adjust speedometers, easily.

Can't you adjust the tire height in Forscan?

18 vs 20 inch wheel doesn't necessarily mean anything, the overall tire height which is what counts

Plus, even if you go with a taller tire (0.7 inch in this case, 27" vs 27.7"), your speedo isn't off by much

https://tiresize.com/speedometer-calibration/

 

[Junkyard Dog]

I ask because for a bit now my Waze App has shown me consistently driving 2-3 mph faster than my speedometer does; researching (e.g., a google search) shows that Waze has a margin of error in the 2-3 mph range, so I wasn't too worried about it.

Waze is more accurate than your vehicle's speedometer, and it is also more precise, which means that the margin of error is less than your car's dashboard display.

Federal regulations (49 CFR 393.82) permit factory speedometers to have a variance of 10% higher or lower than the actual speed, but most factory calibrations err slightly on the high side, as erring on the low side could cause a lot of consumer complaints due to speeding tickets.

Sponsored