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Stock AT4 305 55 20

Pushtruck23
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Pushtruck23 New Member

Pushtruck23

Posted
Posted (edited)

Test fitted a 305 55 20 Toyo AT at local tire shop and it fit the stock 20" wheel (no spacer, no mods). It was close to upper control arm.

 

My preference is a Nitto Terra Grappler  G2. Is anyone running a 305 on a 20? 

 

I pay a restock fee if I order them and they don't fit. Is it worth the gamble?

Edited by Pushtruck23
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Mountain boy Enthusiast

Mountain boy

Posted
Posted

I think you would need to do a 305x50x20 instead of a 55. A 305 will barely fit on a 9 inch rim needs to be on a 10 inch rim. I had 305’s on an old Denali I had but 10”rims.

brianc636 Enthusiast

brianc636

Posted
Posted
I think you would need to do a 305x50x20 instead of a 55. A 305 will barely fit on a 9 inch rim needs to be on a 10 inch rim. I had 305’s on an old Denali I had but 10”rims.



I think you mean a 295 since that’s the width portion of the tire. The 55 is the side wall. I may be wrong but here’s my math...

305/25.4 = 12.00 wide

305 x .55 = 167.55 mm for sidewall.

167.55/25.4 = 6.6” of side wall height

6.6” x 2 + 20” (rim size) = 33.2” overall height



McCoy7 Enthusiast

McCoy7

Posted
Posted

Forum member BlackLS had 305/55/20 on aftermarket wheels with no rubbing.  Looked really good in my opinion.  That’s what I am going to do.  

Mountain boy Enthusiast

Mountain boy

Posted
Posted

No I was talking about tire height, unfortunately you can’t figure tire height with math the manufacturers are not consistent. The Nitto Ridge Grappler will work with a 55 it’s 33.25 but it’s still to wide for a 9 inch rim. I am looking at Cooper tires even in a 50 it’s to tall about 34.5 . I would never put a 305 on a 9inch rim. There are some companies that sell 35 inch tires that are actually less than 34 inches tall. Discount Tire online lists tire heights of each tire so check the specific tire you want to use. Look at weight too heavy tires kill gas millage .

BlackLS Enthusiast

BlackLS

Posted
Posted
2 hours ago, McCoy7 said:

Forum member BlackLS had 305/55/20 on aftermarket wheels with no rubbing.  Looked really good in my opinion.  That’s what I am going to do.  

Thanks McCoy. I did have a 1.5" Motofab level with these wheels. No rubbing or trimming.

 

Picture with 305/55's on 20x9 +1 Fuel Mavericks before the BDS lift.

5d34d00da37fb_DSC_0316(2).thumb.JPG.023464342d11b758c49183953fda64b3.JPG

 

  • Like 2
McCoy7 Enthusiast

McCoy7

Posted
Posted
3 hours ago, Mountain boy said:

No I was talking about tire height, unfortunately you can’t figure tire height with math the manufacturers are not consistent. The Nitto Ridge Grappler will work with a 55 it’s 33.25 but it’s still to wide for a 9 inch rim. I am looking at Cooper tires even in a 50 it’s to tall about 34.5 . I would never put a 305 on a 9inch rim. There are some companies that sell 35 inch tires that are actually less than 34 inches tall. Discount Tire online lists tire heights of each tire so check the specific tire you want to use. Look at weight too heavy tires kill gas millage .

A 305 is fine on a 9” wheel 

  • Like 1
Mountain boy Enthusiast

Mountain boy

Posted
Posted

According to who? What tire, no two brands of tires are the same. You end up with a tire that looks like a fat chic in to tight jeans,  I asked the guy at Discount Tire they won’t even mount a 305 on a 9 inch rim but I’m sure someone will.

Pushtruck23 New Member

Pushtruck23

Posted
  • Author
Posted
7 hours ago, Mountain boy said:

No I was talking about tire height, unfortunately you can’t figure tire height with math the manufacturers are not consistent. The Nitto Ridge Grappler will work with a 55 it’s 33.25 but it’s still to wide for a 9 inch rim. I am looking at Cooper tires even in a 50 it’s to tall about 34.5 . I would never put a 305 on a 9inch rim. There are some companies that sell 35 inch tires that are actually less than 34 inches tall. Discount Tire online lists tire heights of each tire so check the specific tire you want to use. Look at weight too heavy tires kill gas millage .

Thanks for the Discount Tire tip. That is where I'm buying from. According to their site the 305 Terra Grappler will work on a 8 -11 inch rim. My biggest concern is clearance from the upper control arm. I think diameter wise i should be ok. 

Pushtruck23 New Member

Pushtruck23

Posted
  • Author
Posted
6 hours ago, BlackLS said:

Thanks McCoy. I did have a 1.5" Motofab level with these wheels. No rubbing or trimming.

 

Picture with 305/55's on 20x9 +1 Fuel Mavericks before the BDS lift.

5d34d00da37fb_DSC_0316(2).thumb.JPG.023464342d11b758c49183953fda64b3.JPG

 

Thanks. I have the Motofab 1.5 ready to install if I have clearance isdues.  Good looking truck.

McCoy7 Enthusiast

McCoy7

Posted
Posted (edited)

Mountain Boy which Discount you go to? Just like they stated above 305 will work on 8” to 11” wheels that per any fitment guide including Discounts.  Heck 2019 Ford Raptor comes stock with a 315 on a 8.5”. 

Edited by McCoy7
JT19HC Enthusiast

JT19HC

Posted
Posted

I have 305/55/20 Ridge Grapplers mounted on 20x9 20mm on my HC with the 2" GM lift, and no issues at all. 

Screen Shot 2019-07-18 at 5.51.39 PM.png

mattsvtcobra Enthusiast

mattsvtcobra

Posted
Posted
9 hours ago, JT19HC said:

I have 305/55/20 Ridge Grapplers mounted on 20x9 20mm on my HC with the 2" GM lift, and no issues at all. 

Screen Shot 2019-07-18 at 5.51.39 PM.png

Love it! I have been unable to find a picture of a 305 55 20 on the AT4 stock 20 inch wheel. Would love to see that.

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