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Discussion Starter · #1 ·
I would strongly recommend reading this thread if you have custom wheels and tires on your 300. I learned alot about cruising down the highway lookin good and not being prepared for the misfortune of a blowout. My wife and I were on a 600 mile trip up into South Dakota. We were 160 miles north of Fort Collins, Colorado, about 12 miles outside of Douglas Wyoming, when all of the sudden I am in the fast lane of a 2 lane interstate and I am saying to myself something is not right. The steering wheel is starting to shimy and the car is shaking as well. We are passing two vehicles at about 85 mph, I get into the right lane, letting the car coast down in speed and all of the sudden at 75-80 mph smoke and chunks of tire are flying everywhere. This was definitely a NASCAR style blowout. I continue to slow down using my brakes, but not using them so hard that I will grind my wheel off. I have gotten over on the shoulder of the road, so those other two cars can continue by me even after seeing the tire blow, why stop to help an arrogant ass speeding in a 300c, I guess. I get clear over into the dirt with the blown tire to save the wheel from the asphalt, but there is a linear pole coming up and I am still going to fast, back up on the asphalt around the pole and back into the dirt. We get out the tire is smoking but the wheel doesn't look to bad. OK so we survived no wreck, no damage to the car. This is where I start learning everything that I didn't think would happen with custom wheels and tires. Luckily I did want my custom wheels and tires to be as close as possible to the stock ones. I pull out the spare, the jack and the lug wrench. Guess what, factory lugs are 3/4", aftermarket lugs are 13/16", I can't even get the wheel off the car, remember we are 13 miles from a town of 3K people. As luck would have it I flag down a Dodge dually pulling a goose neck trailer with a car on it. He has tools and helps me change the tire. So now we are on the way to Douglas at about 50 mph, not excited about this at all because we have the AWD model, can't be good for the drivelines because those tires are not the same. We get to Douglas, the first automotive place we see is the Chrysler dealership. Well obviously nobody carries a 20 inch tire anywhere. Not Douglas, Cheyenne, Casper, Rapid City, not even Fort Collins where I got the tires. So now we are finished. No tire and don't want to drive the car on the spare. My only option is to call a friend in Fort Collins, I call him at 330 in the afternoon, he goes over to my house loads up the stock wheels and tires in my durango and heads 160 miles north. When he gets there we go back to the dealership and they open up after hours to let us use the shop to swap out the wheels. My buddy gets back to Fort Collins shortly before midnight. The things I learned in this situation that I want to pass on are as follows; carry the right lug wrench, people with 22's, especially AWD cars, I would not advise long trips, just asking for problems, if so maybe spend the money to set up a fifth wheel to match.
I am posting this thread because when I contacted Nitto they told my they are not liable for any cost, that is incurred in a situation such as mine. As for the tire blowing the tire shop is saying symptoms of low pressure, which is not true my tires were all at 35 psi when I left, it was 80 degrees outside that day, no debris, no lacerations to the tire what so ever. I am saying manufacturer defect. Also unbelievably, no wheel damage, you will see in the pictures, the tire rolled to the inside of the wheel and actually doubled itself up on the inside of the wheel and about 2 inches of sidewall kept the outside edge off the pavement. Any more questions I will be happy to answer.
 

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OMG! I have your tires! What are the rest of the specs on your Nitto's? You mentioned both 20" and 22" in your post so I am confused. It's difficult to see in your photo but your tire doesn't look as wide as mine. I didn't know that about the lug size difference either. What a mess. You must have a really nice friend, too! I am glad you and your wife made it safely out of a bad situation. I'm not so sure you can't dispute this with Nitto....

bruno
 

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YIKES! Glad you came out ok.

I have the 420s on my dealer installed 20's - they've been great, even at 120+ on the race track. Sounds like you may have a bad one.
 

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Discussion Starter · #4 · (Edited)
Hey Bruno, yes I have 255/45/20 Nitto 420S tires and Zinik Z-6 (20x 8.5). What I meant about the 22 inch wheels is that the tire and wheel size of the 22's and the spare being used in conjunction with them, especially on the AWD model would be extremely tough on the driveline and bad on rear wheels of a RWD model also.

Yes, 5point7, I hope it is the only bad one, what is really scary is that I had just finished racing a Volvo V70 turbo wagon about 40 miles prior to this incident. We were both running down the highway evenly 120-125 mph, that is one fast station wagon.
 

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Thanks for the clarification, Loyal-one. I can't say that I won't do 85 mph when I have the opportunity but your experience will now be in the back of my mind when I do. Let me know if you get any where with Nitto.

bruno
 

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that is why i would never go with lo profile tires on my car. just not enough rubber on the road for me. i had nitto 20" when i had my base 300 and i could feel the raod and the shake was so bad at moderate speeds. i would only go with the toyo proxies on 20's. just my .o2
 

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Looks like your tire seperated on the outside edge of the wheel, good thing too, as it looks like the sidewall that stayed on the rim; saved your wheel.
Glad to hear that you and the Mrs. are alright. That is scary enough to read about, let alone experience it. Some halloween treat that turned out to be.
 

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wow, i have the 420s' as well and have had no problems with them, could it have been possible that you incurred a slow leak while driving (nail or debris which didn't instantly blow your tire out) which caused the tire to lose pressure which ultimately ended in a lose of structural integrity? well i'm glad that you were able to save the car with your quick thinking and didn't hurt yourself. i'm going to go check my tire pressure and lugs (for proper fitment) right now!
 

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apbrian112 said:
wow, i have the 420s' as well and have had no problems with them, could it have been possible that you incurred a slow leak while driving (nail or debris which didn't instantly blow your tire out) which caused the tire to lose pressure which ultimately ended in a lose of structural integrity? well i'm glad that you were able to save the car with your quick thinking and didn't hurt yourself. i'm going to go check my tire pressure and lugs (for proper fitment) right now!
Brian,

What you said is absolutely true, as a tire 'blow-out' is caused by either a sudden loss of air or a gradual loss of air over some period of time. One should also keep in mind that at those speeds, the additional friction causes added heat build-up which will in fact attribute to diminished structural integrity. When the tire no longer has the adequate amount of internal air pressure capable of supporting the vehicle's weight, something has to 'let go', and that thing is usually the tire's sidewall. 99% percent of the time, evidence of a tread and/or sidewall puncture will be identified. With regards to the different lug nut OD sizes, purchase a 'cross-bar' style lug wrench from your local auto parts store. It'll have the four most popular lug nut sizes, as well as also being more 'user friendly'...allowing for more torque via its integral design. :wink1:
 

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Discussion Starter · #10 · (Edited)
Mr. DJ everything you said is correct. But in my situation there is no puncture marks or lacerations on the inside of the tire anywhere and the air pressure in my other 3 tires is still at 33 psi with the cooler temps. They were at 35 psi when I left that day. The temperature was only 80 degrees also. So that 99% and the 99.9% that the tire shop usesdid not fit my end results, I feel that my situation is in the 1/10 of a percent category. Defective tire that gives you the same result.
 

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How can you prove that the tire was defective though??? I dont knwo much about that. I am runnng the same tires in germany hwere I am running at 126 all day every day on the autobahns and nothing here. I knwo the lugs are different sizes so I carry spare lugs and a spare lug tool. Other than that. It's 340 hp all day everyday when there is no snow or ice.
 

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I've had a couple of blowouts in the past and can't infer any relation to yours, however, each occurred after rotating the tires side to side and only with steel belted radials. Mine were caused (I was told) because the steel belts shifted under a heavy load. (Not overloaded) Some tires don't like to be rotated side to side, no matter how advertised. I don't know the Nitto's construction and couldn't find the information on their website. In my case, the friendly local distributor sold me a new tire at a prorated price, and recommended that I only rotate front to back with any brand of steel belted radials. I was upset with the failure, but at the same time happy to get a new tire for minimal cost. IMO a catastrophic failure like you had is most likely from excess heat (irregardless of why) or a defect in the tire. I suppose I should mention that my experiences were in the 80's and I'm sure tires have come a long way, however, history has a way of repeating itself. Best of luck
 

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Hi,

The dealer who sells and services these tires should be able to inspect the tire for damage. If there is no obvious damage, the tire should be replaced under warranty. Warranty replacement would normally be adjusted for tread wear. I have had tires replaced by Michelin, Goodyear and others. Any maufacturer who will not stand behind their product should be avoided.


Phil
 

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I have the 420S nitto tires on my awd 300c . had them road force balanced after I purchased them even though they said they were done when purchased. my dealer said they should have at least 200 miles on them to be properly road force balanced.
They also reccommend 40psi and that 35 is on the borderline for 20 inch tires.
 

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The place where I purchased my Nitto tires (and the rims) said 45 is the top recommended psi but preferred inflating them to a 40 psi based on local roads and weather conditions. Definitely said 35 psi would be considered underinflated with the 255/45/20 tires.

bruno
 
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