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Discussion Starter · #1 ·
Has anyone tried to put a 305/65/17 on a stock Pro4X wheel with a 3" lift? Do they rub? I know the tire measures 32.8" High and the section width is 12.5" but Q is will they rub?
 

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A 285 tire on a stock rim will rub the frame when at full turn so a 305 on a stock rim will rub sooner.
 

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Discussion Starter · #3 ·
But a 285/70/17 is taller than a 305/65/17. How much of a offset would I need to clear it compared to the stock wheel or can I throw in a set of spacers?
 

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I put 305/70 on stock 16s on my truck with a 5" lift and it still rubbed. Mud flaps came off...still rubbed, trimmed the fenders and it still rubbed on the passenger side at full lock. I'm not sure if you can fit a 305 with out a wheel adapter in the front. Mine looks like if I took the 1.5" adapter off, the tire would rub on the spindle (looks like it would, not sure if it actually would though but it would be extremely close).
 

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Discussion Starter · #5 ·
I am thinking the same if I get a wheel spacer with a 1.5" thickness or a wheel with 1.5" less backspacing I could fit them
 

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I am thinking the same if I get a wheel spacer with a 1.5" thickness or a wheel with 1.5" less backspacing I could fit them
I'm not exactly sure how to explain this but if you have rims with a lot of offset or if you add spacers/adapters that will actually make the tires rub worse. Especially on the rear of the fender wells. I had some issues with my rims clearing my caliper mounting bracket, so I had to get some custom made 1.25" adapters to stick them out some. Now, I have 4" of lift in the front and with the 1.25" adapters and the big offset on my pro comp rims I couldn't even clear a 265/75R16. I had to do some major trimming and melting of plastic. And it still rubs a little at full crank and a little compression of the front suspension.

So basically when you stick the tires out further they rub more. Im just not sure how to explain it in a technical manner right now. Hope this helps.
 

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I have 305/70R16 tires mounted on American Outlaw Colt wheels. No spacers.
 

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You could try a 1" spacer on the factory wheels to clear frame and suspension but probably will rub on the outer fender where the mudflaps are.
 

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You could try a 1" spacer on the factory wheels to clear frame and suspension but probably will rub on the outer fender where the mudflaps are.
The quoted post is a little mis-leading. To use the 1" spacer, you will need longer studs. If you try and use a 1" adapter, you won't be able to fit the rims since the oem lugs are just over 1.25" long.

I have another question thou, are you trying to put those wheels on stock rims? Doesn't the Pro have 16s?

Lastly, just remember when you increase the size of the tire, you are adding weight and most likely diameter so you may need to look into gearing to correct for this but its not an easy thing on the 2nd gens.
 

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The quoted post is a little mis-leading. To use the 1" spacer, you will need longer studs. If you try and use a 1" adapter, you won't be able to fit the rims since the oem lugs are just over 1.25" long.

I have another question thou, are you trying to put those wheels on stock rims? Doesn't the Pro have 16s?

Lastly, just remember when you increase the size of the tire, you are adding weight and most likely diameter so you may need to look into gearing to correct for this but its not an easy thing on the 2nd gens.
Very true. Exactly why my adapters are 1.25". Just enough to clear.
 

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305 is a little wide on the stock 7 inch wide rims...

I have 305/70R16 tires mounted on American Outlaw Colt wheels. No spacers.
Mike's clear because he has wider rims and they have some serious offset ( and look amazing of course)
 

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Discussion Starter · #13 ·
according to Fabtech with there 6" lift you can clear a 315/70/17 tire on a 17x8 wheel with a 5" backspacing with minor trimming
 

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according to Fabtech with there 6" lift you can clear a 315/70/17 tire on a 17x8 wheel with a 5" backspacing with minor trimming
I have to ask, how does this help?

As you may have noticed by the responses that it is hard to tell until you pick the rim and tire and then what your final lift will be. Our truck have a wacky bolt pattern (6x4.5) so it is hard to find rims that fit. Then when you find the bolt pattern, the offset and backspacing are wacky. This is why there are so many clearance issues on the front end.

Then on top of all of this, a lot of guys have decided to go the Tswap way so its even different for them.

When it boils down to it thou, you may think a spacer will help but in all honesty, the spacer only allows the inner side of the tire to impact the fenders quicker.

Lastly, I know you want to go wider, but you have to look at the safety limits of the rims width. A 285 will fit on an 16" oem rim but its not recommended but a 305 or 315 is just insane. It has been done but I would not recommend it unless you have aftermarket rims that are wide enough.

Lastly, don't forget about gearing since wider tires are also heavier and possibly taller so your overall ratio will suffer and your truck will be a dog off the line and a pig at the pump.
 

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I have to ask, how does this help?

As you may have noticed by the responses that it is hard to tell until you pick the rim and tire and then what your final lift will be. Our truck have a wacky bolt pattern (6x4.5) so it is hard to find rims that fit. Then when you find the bolt pattern, the offset and backspacing are wacky. This is why there are so many clearance issues on the front end.

Then on top of all of this, a lot of guys have decided to go the Tswap way so its even different for them.

When it boils down to it thou, you may think a spacer will help but in all honesty, the spacer only allows the inner side of the tire to impact the fenders quicker.

Lastly, I know you want to go wider, but you have to look at the safety limits of the rims width. A 285 will fit on an 16" oem rim but its not recommended but a 305 or 315 is just insane. It has been done but I would not recommend it unless you have aftermarket rims that are wide enough.

Lastly, don't forget about gearing since wider tires are also heavier and possibly taller so your overall ratio will suffer and your truck will be a dog off the line and a pig at the pump.

This is exactly my situation. Im only running 265/75R16s with 4" of lift and still rubbing sometimes after a lot of trimming and melting. Since my pro comps though wouldnt clear the calipers i had to get those 1.25" adapters made since I couldnt find any spacers. (1.25" is just enough for the adapter to clear the studs) Also i didnt know how big of a spacer i needed and I didnt know the biggest size spacer i could put on for the lug nut to still be able to grab enough of the stud. So with the backspacing of the rims and adapters im already rubbing with 4" of lift and 31" tires.

So now Im planning to do a titan swap, but Im kind of screwed because Im definitely not getting new tires or rims since they're brand new and theres no way i can add a titan swap to my already rubbing tires with the spindles ( pushing out about 1"), extreme backspacing on the pro comps, and 1.25" adapters. Even with fiberglass fenders I would have a rediculous track width that wouldnt match I think. I got to figure out something. I think all I'll need is like custom made 1/8" spacers, but then i might need longer threads. IDK!!!!!

Anyways sorry to thread, but this is exactly the kind of problems we're forced to deal with.
 

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according to Fabtech with there 6" lift you can clear a 315/70/17 tire on a 17x8 wheel with a 5" backspacing with minor trimming
Doughboy has 6" fabtech Lift with 35s





Anyways sorry to thread, but this is exactly the kind of problems we're forced to deal with.
I would get rid of those rims and get a set that fits.
 

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Doughboy has 6" fabtech Lift with 35s







I would get rid of those rims and get a set that fits.
Yah but I like the pro comps and have them fitting now. Plus they were new and are a lot of money. I dont feel like trying to fit another rim and deal with all the hassle again of mounting the tires and the tpms sensors and everything. What was weird that we all discussed a while ago in a big thread is that I have the same pro comps as a bunch of other people on here who didnt have any issue at all with them fitting on. Pro comp even said they should fit but they didnt. I got pictures of it in this thread here.

http://www.clubfrontier.org/forums/f78/help-please-pro-comp-7089-major-issues-49595/
 

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Discussion Starter · #18 ·
According to Fabtech and calmini the best sized wheel for the truck is a 17x8 with a 5" backspacing with 4" of lift you should be able to clear a 305/65/17 and with 6" of lift a 315/70/17 . I just don't know anyone who has done it. I know you can get a 17x9 KMC Addict with a 5" backspacing but I don't know anyone who has them on there truck with that big of a tire.
 

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Discussion Starter · #20 ·
let me ask you this if I put a 17x9 wheel on the truck with a 5" backspacing with a 6" lift I should be able to clear a 35x 12.5" tire, correct? Doughboys done it?
 
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