• Car enthusiast? Join us on Cars Connected! iOS | Android | Desktop
  • Hint: Use a descriptive title for your new message
    If you're looking for help and want to draw people in who can assist you, use a descriptive subject title when posting your message. In other words, "I need help with my car" could be about anything and can easily be overlooked by people who can help. However, "I need help with my transmission" will draw interest from people who can help with a transmission specific issue. Be as descriptive as you can. Please also post in the appropriate forum. The "Lounge" is for introducing yourself. If you need help with your G70, please post in the G70 section - and so on... This message can be closed by clicking the X in the top right corner.

Tires Tires Tires

To the OP. From your statements it seems that you have never owned a car with todays type of ultra high performance tires which have steel belts plus nylon belts in most brands. Nylon will flat spot. Flat spotting was a big problem in the 50's with the new nylon construction tires which was years before polyester cord was used. If you don't like high performance tires then always check and make sure you get touring tires with no nylon used in the construction. Construction materials used in the tire are stamped on the sidewall of each tire.

The issue isn't exposure to high performance tires. I know you were talking to the OP, but this is my 4th set of high performance tires in a row (each different brand/model combo) and they're the first to flat spot. For me they're only very mildly annoying and they smooth out pretty quickly, but I can definitely detect what OP is talking about and it hasn't happened at all in my experience on BFG Gforces, Bridgestone Potenzas, or most recently on Michelin Super Sports. Each of these were also on cars with firmer suspensions than the Genesis and flat spotting would have been more noticeable.
 
I don't understand why some owners have this problem and some don't. I live in Florida and have a flat spot problem. I took the car back to the dealer and they acknowledged the problem. They decided they were going to swap my tires for those on another Genesis. They tried five different cars and all have the same problem so they gave up on that idea. They did road force balance my tires after they had been heated up by driving as outlined on other threads on this site. That resulted in a smoother ride after the tires warmed up but still did not do anything for the rough ride during the first few miles of driving. Much of my driving is less than 5 miles and is really annoying to have such a rough ride.

I asked for Hyundai to replace my tires with non-nylon cap tires. The service manager forwarded my request to Hyundai and I am waiting for response. I really doubt they are going to do anything. I am thinking about replacing the tires that have 2500 miles on them. Any thoughts on replacement tires?
 
Looking to update and upgrade your Genesis luxury sport automobile? Look no further than right here in our own forum store - where orders are shipped immediately!
There are several issues with replacing the tires:

The tire sizes on the V8 are not that common and there are not too many tires that come in that size.

The Hancock tires have a very good performance and tire wear rating. Many tires in this size will last half as long.

I expect more tire options in this size as time goes on.
 
Internet forums aren't the best place to determine 'widespread problems'.

On a statistical level no one would disagree with your statement. The sample size and methodology is small and non-existent, respectively.

Logically this is exactly what internet forums are for: to reach people everywhere. Whether we're talking about how much we love this car, how to change out lights, how best to use certain things, speculation about future features, or yes to discuss problems, internet forums almost couldn't be better as a way to determine widespread problems.

Like in this case we have several users in this thread who report they have a Genesis with no thumping whatsoever, even with cold temperatures and low tire pressure. For my vehicle I'd have Flintstone-esque tires at 17 F and 29psi. At 40F and 36psi cold, the problem is harder to detect. I've now read those threads again that I mentioned in my last post, and we have the OP of those threads who says he/she sampled other vehicles on that dealer's lot and they all had the problem. So that could be a bad batch. But elsewhere in those threads there's another person who sampled three cars on a dealer's lot in an entirely different part of the country and they all had the problem. Bernster just reported his/her dealer tried swapping with FIVE other vehicles and they all had the problem. I'm not even counting the people who have reported issues with just their cars.

It would seem logical to use this forum to try to figure out if there's any rhyme or reason to the problems. VINs can provide clues. The last six are reserved for the manufacturer and are usually production or serial numbers. The one before that (11th from the other direction) is for the plant. My last seven digits are U040961.

There are four in this thread who have reported no problems. Ernie3647 and rickfen have not experienced it despite low pressures and temperatures, and BRJACKET has not experienced in warm temps, and dubbyak has not experienced in an unknown situation. If those users, plus those in the other two threads about tires could post the last seven digits of their VINs that would be critical to tracking these problems down.

Might be even more important to post tire manufacturer dates too. Look for the DOT code on the tire. Mine is DOT T7EF 1A H 2614. Just post the last four, in this case 2614 means the 26th week of 2014, or basically the last week of June.

In terms of numbers of vehicles (not necessarily users) there are far fewer who are reporting (so far) no initial flat spotting, so it's extremely important those users post theirs! Thank you.
 
The issue isn't exposure to high performance tires. I know you were talking to the OP, but this is my 4th set of high performance tires in a row (each different brand/model combo) and they're the first to flat spot. For me they're only very mildly annoying and they smooth out pretty quickly, but I can definitely detect what OP is talking about and it hasn't happened at all in my experience on BFG Gforces, Bridgestone Potenzas, or most recently on Michelin Super Sports. Each of these were also on cars with firmer suspensions than the Genesis and flat spotting would have been more noticeable.

The Michelin super sport does not have nylon in it. The Protenza s-04 has a aramid/nylon blend wrap, not just nylon. The BFG Gforce super sport does not have nylon and other Gforce series have blend or nylon. So in the past you may not have had tires with pure nylon reinforcement in them.
 
Has anyone ever heard of Federal tires? Good, bad ?
 
The Michelin super sport does not have nylon in it. The Protenza s-04 has a aramid/nylon blend wrap, not just nylon. The BFG Gforce super sport does not have nylon and other Gforce series have blend or nylon. So in the past you may not have had tires with pure nylon reinforcement in them.

The Potenzas were RE050a's that are factory for Infiniti Sport packages and are straight nylon. The GForces were just Sport not Supersport and I believe those are also nylon. You're completely right about the Pilots, but my point was that this is not just some standard behavior for high performance tires that everyone should expect regardless of brand or model.
 
Back
Top