[cobrabite]

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

 

[LAFD5246]

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

 

[snakebite90]

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.

 

[cobrabite]

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)
5,0	155	165 or 175	185
5,5	165	175 or 185	195
6,0	175	185 or 195	205
6,5	185	195 or 205	215
7,0	195	205 or 215	225
7,5	205	215 or 225	235
8,0	215	225 or 235	245
8,5	225	235 or 245	255
9,0	235	245 or 255	265
9,5	245	255 or 265	275
10,0	255	265 or 275	285
10,5	265	275 or 285	295
11,0	275	285 or 295	305
11,5	285	295 or 305	315
12,0	295	305 or 3

 

[robvas]

You want a 315-35

 

[cobrabite]

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

 

[Laminar]

Don't rely on those generic charts. Pull up the tire you're interested in on Tire Rack and check out the Specs tab.

https://www.tirerack.com/tires/tires.jsp?tireMake=Firestone&tireModel=Firehawk+Indy+500&sidewall=Blackwall&partnum=74WR7FHI5&tab=Sizes

For this 275/40R17 tire, a wheel width of 9-11" is specified.

If you want to see what a tire looks like on a certain rim size, you can use Fitment Industries.

Here's a 275/35 tire on an 18x10.5 wheel:

 

[Nitrous SSC]

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

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

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.

 

[STREETFIGHTER50]

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.

 

[cobrabite]

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.

 

[Nitrous SSC]

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.

 

[tjm73]

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.

 

[Killer95Stang]

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.

 

[qtrracer]

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.