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Discussion Starter #1
I picked up a 2004 Mach 1 even if it is a driver I would like it to look good so,,,,
If I run 275 40 17 on a 10.5 wheel on the back would I have any problems with the tires rubbing?


Note When I got the car two of the stock


wheels were bad. I was thinking of running two of 10.5 wheels
from asf that look like stock only wider. I checked the tire wheel chart and it said a 10.5 would
be a good match for the 275.
So will they rub when the car is loaded? Right now it has aftermarket wheels and spacers
and I don't much care for that look
 

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Seems like 275 might be a little narrow for a 10.5. Makes me wonder if the tire would stretch, something like this picture
1068283
 

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Yup like mentioned above, the 275 is small for a 10.5. The rims sticks out further than the tire it won’t give the rim any protection if you hit/rub the curb. Plus it doesn’t look good but that’s just my opinion.
 

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Discussion Starter #4
Boy your right that don't look good at all I was going by a chart
This is the chart I was using,, Sound like they don't know what there talking about
Rim
width
(inch)
Min.
tire
width
(mm)
Ideal
tire
width
(mm)
Max.
tire
width
(mm)
5,0155165 or 175185
5,5165175 or 185195
6,0175185 or 195205
6,5185195 or 205215
7,0195205 or 215225
7,5205215 or 225235
8,0215225 or 235245
8,5225235 or 245255
9,0235245 or 255265
9,5245255 or 265275
10,0255265 or 275285
10,5265275 or 285295
11,0275285 or 295305
11,5285295 or 305315
12,0295305 or 3
 

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Discussion Starter #6
what about a 285? the Section Width is 11.22 will 315s fit within the fender?
I don't care a tire sticking out
 

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I ran a 285/40/17 on a 17 x 10.50 wheel for quite a few years on my wife's former cobra.

1068333


1068334


My current cobra has 18x10 wheels with 295/35/18. They fit nice and square. (bottom photo)

1068335


If you want a nice square/straight sidewall I suggest a 295/40/17 or some sort of variant in the 295/305 range. If you don't mind a little bulge, a 315 works well too. Shouldn't rub unless you have the car super low or you've got the wrong offset of wheel.
 

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I’d go for a the 315/35-17 Mickey Thompson Ultra-High Performance Street Comp Tire. You should have plenty space back there. Now if it was a Fox I’d probably stick to a 275 or 285.
 

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Discussion Starter #10
I ran a 285/40/17 on a 17 x 10.50 wheel for quite a few years on my wife's former cobra.

View attachment 1068333

View attachment 1068334

My current cobra has 18x10 wheels with 295/35/18. They fit nice and square. (bottom photo)

View attachment 1068335

If you want a nice square/straight sidewall I suggest a 295/40/17 or some sort of variant in the 295/305 range. If you don't mind a little bulge, a 315 works well too. Shouldn't rub unless you have the car super low or you've got the wrong offset of wheel.
Nitrous SSC
That is a nice Cobra looks just right. Did you have wheel spacers? And what size is on the front.
 

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Nitrous SSC
That is a nice Cobra looks just right. Did you have wheel spacers? And what size is on the front.
No spacers. That car had 255/40/17 front. 17x8. I wouldn't recommend that I found out the car understeered like crazy in the track. Now I always run a 17x9 275 on the front.
 

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When I consider tires, I go to tire rack or the tire manufacturers website and get the section width and tread width. I jot that down. Then I take the wheel I want to use that tire on and add 1" to the wheel width. Next I take the section width and subtract the "new" wheel width. This is where personal preference comes into play if you are going for a look. I like to have an 1/8"-3/16" left on both sides (1/4-3/8" overall).

Some tires that are sold as the same size have different section widths and tread widths.

This is not to say this is the right way to fit tires. This is just my way and it doesn't allow the wrong size tires to be put on a given wheel.
 

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I just took these photos of my Gt with 285/40/17's. Been running them for 15 years and I thought they looked a little better than the 315's on a 10.5" wheel. Only problem is, 285's in a 17" wheel size is getting harder and harder to find.

1069379
1069380
 
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I have 18x11s on my 86 Fox mounted with 315/30s. Don't think I'd like the look of a 315 on a 10.5 rim.
 
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