33's on stock?
Elder User
Joined: Dec 2003
Posts: 615
Likes: 0
From: Austin TX
Some have done it, but you might be pushing it a bit regarding the width of the tire versus the 7.5" width of your stock wheel. Most tires that size want something in the 9+ range. I ran 31.5" tires on my stocks for three years ... no problems. And I have seen 33's. It's just a matter of how comfortable you are from a safety perspective.
Don't forget your tire calculator ... determines size, speedo calculations, etc.:
http://www.discounttire.com/dtcs/infoTireMath.dos
Don't forget your tire calculator ... determines size, speedo calculations, etc.:
http://www.discounttire.com/dtcs/infoTireMath.dos
Senior User
Joined: Feb 2004
Posts: 415
Likes: 4
From: St. Mary's MD
You will be fine. You can find plenty of 33" OD tires rated for 7.5 inch rims. I personally would not run a 12.50 inch wide tire on OEM rims, but for 17's a 285/70 works well (about 11 to 11.50 inches wide or so). Not sure if you have 17's or 18's. A lot of people run larger and wider on stockers, but I am not a fan since the contact of the tread to the road is not ideal. I have seen premature wear in the center of the tires in these cases. Possible they had the incorrect air pressure.....
Last edited by joeypurcell; Mar 12, 2007 at 07:36 PM.
Elder User
Joined: Jul 2006
Posts: 958
Likes: 0
From: Las Vegas, NV
Originally Posted by joeypurcell
You will be fine. You can find plenty of 33" OD tires rated for 7.5 inch rims. I personally would not run a 12.50 inch wide tire on OEM rims, but for 17's a 285/70 works well (about 11 to 11.50 inches wide or so). Not sure if you have 17's or 18's. A lot of people run larger and wider on stockers, but I am not a fan since the contact of the tread to the road is not ideal. I have seen premature wear in the center of the tires in these cases. Possible they had the incorrect air pressure.....
Oh, by the way, the two different tire stores, same franchise! Go figure!
Junior User
Joined: Feb 2007
Posts: 61
Likes: 0
bfg at's come in 305/65/18 which is a 34" tire fits fine on stock wheels with lvl kit. Pro comp makes a 305/70/18 mud tire which is 35 tall but only 12 wide which i thinks is the perfect for the stock wheel on a lvl truck. Some people are running 35's 12.5 on stock wheel with no problem. depending on the thread type some are experiencing rubbing issues. 35's will work on stock wheels, or aftermarket if you keep the same backspacing as the stock wheels.
Senior User
Joined: Nov 2006
Posts: 310
Likes: 0
From: West Chester Pa.
I believe when start getting over 33" you should plan on new gears. One of tire web sited had a table that tell you what wheels fit what. min.- max. wheel width. If I come across it I'll post it.
Trending Topics
Junior User
Joined: Feb 2007
Posts: 61
Likes: 0
Shouldn't have any gearing issues unless you go bigger then 35's, especially if you have the 3.73 gears. The stock 275/65/18 on my truck are 32.6.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Rezvani's Latest Post-Apocalytic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
Senior User
Joined: Feb 2007
Posts: 350
Likes: 0
Sorry to all for probably re-hashing info from older threads. I have 3.55's on mine. I always figured "tires is tires" and never thought about gear ratios and the like. Guess I need a deep troll through the old threads.
Senior User
Joined: Feb 2004
Posts: 415
Likes: 4
From: St. Mary's MD
Originally Posted by smokestone52
Joey, I find your post to be very interesting. I am planning to put 33's on my stock Lariat 18 inch rims. Funny as heck, two different tire stores gave me conflicting information. One store said they would not do it because it was un-safe. The other said I would have no problem, since I have a 2" leveling kit. 33's don't even come close to rubbing. Heck, I might go with the 35's. But then I would need new rims.
Oh, by the way, the two different tire stores, same franchise! Go figure!
Oh, by the way, the two different tire stores, same franchise! Go figure!
Senior User
Joined: Feb 2004
Posts: 415
Likes: 4
From: St. Mary's MD
Originally Posted by big red c222
I believe when start getting over 33" you should plan on new gears. One of tire web sited had a table that tell you what wheels fit what. min.- max. wheel width. If I come across it I'll post it.
Tuned
Joined: Jan 2005
Posts: 314
Likes: 16
From: northeast
Tire size?
I been looking to get new rims and tires for a while but have been on the fence on tire size. I thought the nitto terra grapplers 325/60-18 would be a nice fit with my 2" auto spring. Now I see that BF Goodrich has 325/65-18 now avalibile. That size comes out to be 34.6 in diameter. Would that be to much for only the 2" lift up front. I will fit them on 9"rims. Just wondering if any one has that size or close to it. I stay on the pavement but don"t want to chance rubbing. Any input would be appreciated. Thanks BWEP
Thread
Thread Starter
Forum
Replies
Last Post
tbugher62
1987 - 1996 F150 & Larger F-Series Trucks
17
Oct 31, 2013 03:09 PM