Got new set of 295/70/17 terra grappler today. Tire store told me my rims are probably a 7.5" (thanks to Shadow Grey for confirming they are infact 7.5") anyway was on Nittos web site they state that this tire size is approved for a rim of 8"-9.5". 1. Why would a tire store sell me a unapproved size for my rim? 2. What is the dangers of keeping this tire on my truck? They had ordered me a 305/65/17 BFG A/T wich is for a 8.5"-11" rim but they never got loaded on the delivery truck. I put about 2200 lbs in my bed plus pull my trailor with about 8500 lbs. I have 30 days to bring them back for a upgraded tire if I need to. I like the way these tires look on my 06 f-250 but I do not want to put mine or anyone else's life at risk. What are your guys thoughts? Thanks for having this web forum here for us newb diesel owners. I have learned a lot about diesels in my last 30 days thanks to your discussions.
Thanks Ditty for the ultra quick reply. Thats what I was thinking but thought I would run it by you pros first. Will be at the tire store first thing in the morning. Thanks again.
That's what I was thinking. It's a 50/50 thing. You could drive on those tires until the tread is gone ... OR ... you could be driving to the tire shop in the morning and all four could go on you and put you into a ditch. Better safe than sorry!
You should also try and get a tire that is at least an E rating, They have a stronger sidewall, a little safer for towing and hauling. And with the weight your talking about, you wouldn't want any less.
I work at a tire shop and we put tires like that all the time. we have never had a problem the suggested rim width is where the tire is at the correct hight. i don't think you would pop a bead off on the wider tire it is the skinny tires that i would worry about but that is my thoughts. :chicken: But you do wat feels rite.
I have run 305/75/16s on my old truck, and never had a problem, I would not think that it would be an issue. But, if you do not feel comfortable, take them back, its your truck and not mine. Good Luck getting it fixed to your liking. Also, House22 is in the same town, you might want to look him up.
The width on the rim wouldn't bother me to much, do that all the time on the offroaders, It's the weight your carrying on them that would bother me. With a tire that much wider than the rim, you are going to get more side to side movement, plus you have to run more air in them because the tire will want to lift in the center. they will end up wearing faster under the load. No load, no problem.
i won't worry to much about it. look at all the guys running bigger tires on stock rims. i ran 315/75x16 mtr's on my 1st diesel. right now i am running 315/75x16 street tires (on stock rims) on my truck for winter (better grip than my mud tires, muds are tired). never had a problem. but what do u feel is right. it's ur baby, not mine.
The Stock rim is 8.0" though. I have 315/75/16's on my truck with aftermarket wheels that are the same dimentions as the stock wheel, 16X8. The 315/75/16 are rated for a 8-10 inch wide wheel (I think).
NewDiesel has a 17x7.5" wheel while his new tires are rated for 8-11 inch wheel. The point is, say he does have an issue with the tire popping off the wheel, they aren't going to replace it b/c the tire is not rated to work with his wheel, and they are going to put it on him even though a tire shop installed the tire with out noticing the discrepancy. And, now since he DOES know that the wheel/tire combo doesn't mesh, it is his responsibility if anything happens. I'm not saying, I'm just saying.
I would not worry about it. Instructions are just manufacturer's opinions. I see it this way, if you didn't know better, you would be fine. But now that you know, you will not be comfortable with them. Most people say to keep the tire width to within an inch of the wheel width. I have ran 9.50's on 7" wheels and got good wear and the look better. If the tire store will make it right, go ahead and change them out.
Thanks for all the input guys. Went back up to the tire store with my concern and was told they would not of put those tires on if they thought there would be a problem. They give me 30 days if I dont like them I can come back and they will put a different tire on, so I decided to goahead and try them out. I think they look a lot better than the stock 265/70/17 Rugged Trails, but hey they give me 75.00 bucks for each of my stock tires wich were geting me nowhere when I'm out in the fields, only had the truck 6 weeks and goten stuck 3 times. Kinda embarassing getting pulled out by a little Ford Ranger least it was a Ford.
I live by this: I remember that my daughter rides in my truck, I won't put anything on my truck that make me fell uneasy about driving her around! Having said that I think you'll be fine, but if it don't feel right don't do it. It will be easier on you concience if something does happen... Just my 2 cents!!
I know you wont have any issues but I appreciate someone that takes the safety of others into consideration. I wish more people did.
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