Question before buying Winter wheels/tires - Ford Mustang Forum
 
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post #1 of 10 (permalink) Old 12-27-2012 Thread Starter
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Question before buying Winter wheels/tires

The winter tires I have in my tirerack shopping cart are 235-60-18.... Will these throw off my speedometer?

Stock I run the Brembo wheels with stock Pirelli's..... 255-40-19...


2002 Mustang GT 5 speed: Mach 1 grille delete, K&N drop-in air filter, 75mm BBK throttle body, ported C&L plenum, UPR upper and lower control arms, KYB shocks/struts, McLeod Super Street Pro clutch kit, AM firewall adjuster, MM clutch quadrant, Steeda Tri-Ax shifter, Bassani catted x pipe, Flowmaster weld-in 40's, SCT 93 octane Bama tune
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post #2 of 10 (permalink) Old 12-27-2012
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Tires dot Com provides a calculator where you can compute various tire size diameters.
My understanding is many similar sizes result in aout the same diameter but check it out.
Try this

Tire Size Calculator - tire & wheel plus sizing

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post #3 of 10 (permalink) Old 12-28-2012
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Do NOT NOT NOT NOT get 235/60-18's. 255/40-19's are 27" tall. 235/60-18's are over 29" tall. that's a no no. 235/50-18 is what you're looking for.
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post #4 of 10 (permalink) Old 12-28-2012
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I believe the track package includes Brembo brakes which require 19" rims.

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post #5 of 10 (permalink) Old 12-28-2012
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some basics:

- you MUST use the same diameter tire as the wheels, unless you are planning on getting new wheels also
- if getting new wheels, make sure they will clear your brakes -- I believe you CAN use 18" wheels on brembo-equipped cars, but they must be the right design with the spokes out near the edge of the wheel so they will clear the calippers
- taller overall diameter and narrower width is GOOD for snow -- the taller diameter gives you more ground clearance, and the narrower width will make the tires bite in to the snow instead of float on top
- there should be plenty of clearance in the wheel wells for taller tires if the car is not lowered ; clearance is not an issue (the car is designed with clearance for CHAINS!)
- if you use larger diameter tires without recalibrating the speedometer, yes it will throw off the speed and mileage readings -- you will be going faster and traveling farther than the speedometer says. This is directly proportional to the change in diameter. This is no big deal if you keep it in mind so you are not constantly getting speeding tickets.

I see you are in Maryland . . . so you probably don't get much snow and probably don't really need the ultimate snow tire setup

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post #6 of 10 (permalink) Old 12-28-2012 Thread Starter
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Right. I used the calculator and saw that the speedo would be off by over 7%. I am planning on getting 225-50-18 for wheels that will clear my brembo's.

I want to get winter snow tires because I don't want to take any chance in loosing the car in the snow... like totalling it or getting into any accident, or leave it on the side of the road with the potential for a dumptruck to go by and spray salt/sand mix at it or hit it with its plow... Peace of mind really. All seasons won't cut it for me. I will be driving this car to and from ski resorts where there is a better chance for snow to be on the ground too.

2002 Mustang GT 5 speed: Mach 1 grille delete, K&N drop-in air filter, 75mm BBK throttle body, ported C&L plenum, UPR upper and lower control arms, KYB shocks/struts, McLeod Super Street Pro clutch kit, AM firewall adjuster, MM clutch quadrant, Steeda Tri-Ax shifter, Bassani catted x pipe, Flowmaster weld-in 40's, SCT 93 octane Bama tune
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2013 Mustang GT 6 speed: GT Track Package, 301A Tech Package, JLT Catch Can, GT500 Axleback, Steeda Shifter Bushing
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post #7 of 10 (permalink) Old 12-28-2012 Thread Starter
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http://www.tirerack.com/wheels/Wheel...ed&showRear=no

http://www.tirerack.com/tires/tires....l+Transmission

They can be mounted according to the option to mount them in the shopping cart. I put the wrong diameter tires with 18 inch wheels and there was a message that said they can't be mounted and asked me to choose if it was ok or not.

2002 Mustang GT 5 speed: Mach 1 grille delete, K&N drop-in air filter, 75mm BBK throttle body, ported C&L plenum, UPR upper and lower control arms, KYB shocks/struts, McLeod Super Street Pro clutch kit, AM firewall adjuster, MM clutch quadrant, Steeda Tri-Ax shifter, Bassani catted x pipe, Flowmaster weld-in 40's, SCT 93 octane Bama tune
SOLD
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2013 Mustang GT 6 speed: GT Track Package, 301A Tech Package, JLT Catch Can, GT500 Axleback, Steeda Shifter Bushing

Last edited by evanjp; 12-28-2012 at 10:18 AM. Reason: bad link
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post #8 of 10 (permalink) Old 12-28-2012
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as mentioned by previous postees ; stick with p235/50/18 tires but also make sure the 18 inch wheel will clear your Brembo calipers. ( I believe that most Brembo brake owners use 19 ' winter tire and wheels to avoid problems).
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post #9 of 10 (permalink) Old 12-28-2012 Thread Starter
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Here ya go.

Winter wheel/tire discussion - Page 21 - The Mustang Source - Ford Mustang Forums

These wheels will work.

2002 Mustang GT 5 speed: Mach 1 grille delete, K&N drop-in air filter, 75mm BBK throttle body, ported C&L plenum, UPR upper and lower control arms, KYB shocks/struts, McLeod Super Street Pro clutch kit, AM firewall adjuster, MM clutch quadrant, Steeda Tri-Ax shifter, Bassani catted x pipe, Flowmaster weld-in 40's, SCT 93 octane Bama tune
SOLD
for...
2013 Mustang GT 6 speed: GT Track Package, 301A Tech Package, JLT Catch Can, GT500 Axleback, Steeda Shifter Bushing
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post #10 of 10 (permalink) Old 12-28-2012 Thread Starter
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Those are the exact wheels I linked above my previous post. That is a 2013 Brembo Mustang GT. 225 tires will be better for snow traction because they are thinner.

2002 Mustang GT 5 speed: Mach 1 grille delete, K&N drop-in air filter, 75mm BBK throttle body, ported C&L plenum, UPR upper and lower control arms, KYB shocks/struts, McLeod Super Street Pro clutch kit, AM firewall adjuster, MM clutch quadrant, Steeda Tri-Ax shifter, Bassani catted x pipe, Flowmaster weld-in 40's, SCT 93 octane Bama tune
SOLD
for...
2013 Mustang GT 6 speed: GT Track Package, 301A Tech Package, JLT Catch Can, GT500 Axleback, Steeda Shifter Bushing
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