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Old 10-11-2006, 05:17 PM   #1
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Question What's the BIGGEST tire I can fit on my 1990 5.0?

Hey Everyone. I have a 1990 Ford Mustang 5.0 Lx. I'm running on two 225/50 R16 BF Goodrich Comp T/A's in the rear but its time for some new rubber. I really want the Mickey Thompson's ET Street Radials but I'm not sure if they will fit or not. (I'd like a size much larger then 255) I have 16 inch rims, and the rear end is all stock. Could someone please tell me the widest tire I am able to put on without any modifications? I'd like to be able to fit the ET Street Radials P315/45 R16 or the P295/50 R16. Thanks a lot!
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Old 10-11-2006, 05:26 PM   #2
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stock 16" pony wheels? 255 is the widest you can go, since the rim is only 7 inches wide...but actually i wouldn't go larger than 245 on that wheel since the contact patch will be about the same as a 255(which will probably rub anyway). serious, very serious modification, not to mention new wheels, would be necessary to fit a 295 or 315.
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Old 10-11-2006, 06:07 PM   #3
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Check out the Fox body wheel picture thread at the top. There are quite a bit of ways you can go, but it seems that you can stuff a 275/40 in there without major mods. Although, I agree with TENGRAM, you'll need to do some serious work to get 315's to fit. However, those guys in the wheel picture thread come awfully close! It's a good place to see what they've already done--without going through the headache of trying it yourself.
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Old 10-11-2006, 07:37 PM   #4
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There is no general rules because there are far too many factors:

- tire brand
- ride height
- wheel backspacing
- degree of fender rolling
- Axle length
- Keeping quad shocks
- How close tailpipes come to the tire
- etc
- etc
- etc

Many people have gotten 275's to fit without major modifications. I got mine to fit with just a tight fender rolling. Any bigger than 275, and things can get a little hairy. Its possible, and many have done it, but it just depends how far you are willing to go to get them to fit.
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Old 10-11-2006, 08:13 PM   #5
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Quote:
Originally Posted by medium_jay View Post
Hey Everyone. I have a 1990 Ford Mustang 5.0 Lx. I'm running on two 225/50 R16 BF Goodrich Comp T/A's in the rear but its time for some new rubber. I really want the Mickey Thompson's ET Street Radials but I'm not sure if they will fit or not. (I'd like a size much larger then 255) I have 16 inch rims, and the rear end is all stock. Could someone please tell me the widest tire I am able to put on without any modifications? I'd like to be able to fit the ET Street Radials P315/45 R16 or the P295/50 R16. Thanks a lot!
Mickey Thompson only makes one size in 16" tire diameter. It is the 255/50/16 which will fit fine on a stock pony wheel with no modifications at all.
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Old 10-11-2006, 08:52 PM   #6
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i fit 275/50/15 in the rear no problem.
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Old 10-12-2006, 02:54 PM   #7
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I fit 275/60R15 rear, but it rubs on the drivers side on bumps, even after some minor fender rolling (read: I took a BFH to it). No other modifications, except for some Pacer 15x8 rims.
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Old 10-13-2006, 12:16 AM   #8
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i run 295's on my dd and 335's in the rear on my gt
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Old 10-13-2006, 02:00 AM   #9
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seriously though i'm not gonna believe this unless i see some detailed pics
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i run 295's on my dd and 335's in the rear on my gt
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Old 10-13-2006, 08:56 AM   #10
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I had 295s on the back of my Fox, let me find the pics! My cousin runs 325-50-15s on the bck of his car with a little rubbing when cornering sharp, they are on 10 holes.
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Old 10-13-2006, 09:04 AM   #11
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Old 10-13-2006, 01:50 PM   #12
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hmmm, that helps. can we see a pic from directly behind them?
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Old 10-13-2006, 04:06 PM   #13
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I dont have them on the car anymore, let me see if I cant dig up a pic from behind.
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