Wheel and Tire Fitment - read here first.

1fast05

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I'll pull them off at work today to get a measurement and get back with you

18x12 with a 8-13/16" backspacing with 335/30/18 Bfg KDW's

I run a 1/4 inch spacers when I put my 345's on there because it'll rub the frame, other than that just cut the plastic cover off my rear shocks and it gives you another 3/4" to play with
 
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ford20

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It was brought to my attention that the tire sizing equation is off.

The total tire height in inches = [2(YY)(XXX)/254] + ZZ
using example above the tire height is = [2(40)(255)/254] + 19 = 27.02
Stock tire height is ~27" so you want to keep that in mind when looking at tire sizes.

It should be

The total tire height in inches = [2(.YY)(XXX)/254] + ZZ
using example above the tire height is = [2(.40)(255)/254] + 19 = 27.02
Stock tire height is ~27" so you want to keep that in mind when looking at tire sizes.

Can someone Check my Math for me to make sure I got this :idea: :dunce:

[2(.40)(255)/254] + 19 =
[2(102)/254] +19 =
[2102/254] + 19=
8.27 =19=
27.27

Still not working out for me. PEMDAS, parentheses exponents multiplication division addition subtraction. Thats the only way I can get it somewhere close to 27.02
 

peetiewonder

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Can someone Check my Math for me to make sure I got this :idea: :dunce:

[2(.40)(255)/254] + 19 =
[2(102)/254] +19 =
[2102/254] + 19=
8.27 =19=
27.27

Still not working out for me. PEMDAS, parentheses exponents multiplication division addition subtraction. Thats the only way I can get it somewhere close to 27.02

Let me look at that.... There was another error in the calculation. it should be 25.4 not 254 because 25.4mm = 1"

[2(.4)(255)/254] +19
[(.8)255/25.4] +19
[(.8)(~10)] +19 = 27

Sorry about the error
 
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AJCrader

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I think I am either missing it, or its not there...What is the smallest diameter rim I could run on the rear of my '13...I am wanting as much sidewall as I can get for drag racing. I see reference to 17" rims but wasn't sure if I could go smaller.
 

peetiewonder

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I think I am either missing it, or its not there...What is the smallest diameter rim I could run on the rear of my '13...I am wanting as much sidewall as I can get for drag racing. I see reference to 17" rims but wasn't sure if I could go smaller.

Not sure, but I think 15" wheels will fit the back of your car. That's just a guess. This guide was geared more toward street fitment.
 

Wile E. Coyote

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I just ordered and should be receiving Rohana RC10's, what does everyone think?
 

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Wile E. Coyote

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I think you need to ask a more specific question in a thread other than this one.


Yes you are right I should have been more specific, I apologize. I am simply curious as to if anyone has an opinion of Rohana as a brand, I was unable to find out much about the company and "took a chance" on ordering the wheels. They will be 20x9 +25 and 20x10 +40.
 

Fosters

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Just wanna add a link to a site i find useful when I look for this kind of stuff (like meow).

http://www.willtheyfit.com/

It's kind of what the excel spreadsheet mentioned by the OP does, except online and without excel. Bookmark it, use it, love it. :beerchug2:
 

TRC51

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NOTE TO OP:

The spreadsheet at the bottom of your original post has gone missing. I used that a lot, so I went searching and think I found a very nice replacement. This shows measurement differences and everything!

http://www.rimsntires.com/specspro.jsp
 

Redneck_Racer

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Hello. It’s time for me to get tires, wondering if I can run a P285/40R18 on all four corners of my 05 GT? It has stock suspension.
 

stkjock

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Pretty sure it’s been done and discussed. U need the correct rim size and offset to work. Search for that size and I’m certain there are threads on it.
 

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