Im almost ready to order my stuff for my car, but I need some help. Im down to 2 sets of wheels, the saleens(9" & 10") or Cobras(9" & 10.5") but I can't seem to find any pics of 18" cobras with 10.5w........i wanna see how far they come out from the car. I like for my wheels to be slightly under the fenders.(pic below)

Also I wanna know the right tire sizes for both wheels so that my speedo will not be off.

I think I have the Saleens correct(somebody correct me if im off):
18 x 9 W/265/35/18
18 x 10 W/295/35/18

I know the front cobra's can use the same front tires but what about the 10.5 rears.......will that tire size work correct?

im also getting:
1.) H&R Sport Springs
2.) Bilstein Shock & Strut
3.) Mustang SLP Loudmouth Catback
4.) Wheels?(Saleen or Cobra)

 

18x9 is a 275/35/18
18x10 is a 315/30/18

 

The Cobras in 18's will be 18x10 not 10.5.The 17's are the only 10.5's.You will have a hard time finding anything bigger than 295/35/18's for the rears.

 

Could you point me in the direction of the 10" rears. All I seem to be able to find is 10.5" or just the regular 9" rears.

 

They don't make 18x10.5 It is either 18x10 or 17x10.5

 

I got pirelli's at 275/40/18 for my 18x10's. Thats what Tire Rack told me.

 

275/40/18's would be fine for the 18x9's,way too small for the 18x10's.

 

I have 295 35 18 on my rear 9 wheel.

 

wait so which is it, my friend has 245 on his Camaro and his wheels are 9 inches wide, i've heard 315, 275, and 295 for 18x10's. I'm soo F'in confused, i called Tire Rack when i ordered my tires, and I told them, listen my wheel sizes, 18x9 in the front and 18x10 in the back, and they said they will fit fine, I mean i measured them width wise with a ruler and they seem fine...

my tire sizes are :

18x9's: 245/ZR40/18
18x10: 275/ZR35/18

will that work? cuz if not the peeps at Tire Rack lied to me, and I am guna have some seeeerious problems!

 

http://cgi.ebay.com/ebaymotors/AFS-M...99537938QQrdZ1

 

this is what tire Rack says how you measure, and you divide the number by 25.4, thats the conversion from milimeters to inches...275 divided by 25.4 is 10.8...? so technically they should be able to fit...

Tire Rack Reading

 

the reason for the tire size is wheel rotation. for example

275x35x18 compare to stock is .04 to fast in rotation. so if your speedo reads 60 mph your actually traveling 59.8 mph.

295x35x18 is 1.7% to slow. speed reads 60 but your actually traveling 61 mph
315x30x18 is 0.9% to Fast. speed reads 60 but your actually traveling 59.4 mph

that is the only differences 275 are closer to stock then are the other sizes. that is why Tire Rack recommends that size

click below to see this tire Calulator
http://www.miata.net/garage/tirecalc.html

 

Im still looking for the 18 x 10 Cobras...........Ive looked and can still only find the 10.5 wheels.




This is what I really really dont want my back wheels looking like.

 

Looks like spacers are on that one too.

 

that's way too bowlegged for me, when I do dd's i pray it doesn't look like that, lol sorry

 

It won't look like that.He has too have some 1 inch wheel spacers or larger on there.Here is my 18x10's with 285/35/18's.