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Genesis Coupe in the rain?

16K views 41 replies 36 participants last post by  Red Raspberry 
#1 ·
Hey guys, today was the second time I drove the coupe in any real rain and I feel the rear is slipping constantly when driving on the highway at the speed limit when it's wet out. I slow down 10MPH below the limit to 55 but the slipping just keeps going until maybe about 45ish. Is this normal for RWD? I asked the dealer about it during maintenance, but I was told that was suppose to be normal.. My first car had no problems in the rain however, given that it was FWD I guess I can't really compare. This is my first RWD and I know it obviously takes more caution than FWD, but this doesn't seem right. So again, is this suppose to be typical? for the coupe at least?
 
#4 ·
I live in South Florida and have had no such issues. In fact, I find even with the track's Summer tires, this car handles just as good if not better that any car I have driven in the rain.
 
#7 ·
Again, no issues in the rain. Handles better in the rain than the many cars I've driven with the exception of my brother's old 540i. The Hankooks do better than the Bridgestones IMO. How's the tread looking on the tires?
 
#8 ·
The stock RE092A all seasons tires are fine in the rain. Went on highway at speed limit, no problems. City at speed limit, no problems as well. Once I changed to extreme performance summer tires, Ecsta XS, wet traction is extremely terrible.
 
#9 ·
In absolutely pouring rain, I also feel that the car, on stock tires, loves to hydroplane.

Please, do yourself, and all of us, a favor and leave your traction control on in the rain. :p
 
#10 ·
Dammit, I was going to say "in before TCS police" but I was a little too late...

Seriously, if it's that bad either you roads are terrible or there's something wrong with your car. I have driven in everything from icy mix to torrential downpour and haven't noticed any unusual behavior. I certainly drive a little more carefully but at 75 mph in the pouring rain I felt safe. Stock track model with stock summer tires (cringestones).
 
#13 · (Edited)
I'm a pretty cautious driver and I have enough experience to know when I need to slow down when the weather's not best. Also, of course I leave TCS on in the rain. :p
I wanted to see if the slipping was typical of rwd which doesn't seem to be the case. It looks like I'm going to have to take another trip to the dealership.

As for the tires, I bought my gen used, 3.8 track. The rear tires are stock, but whoever the last owner was decided to slap on fronts that are the same size as the rears which are obviously the wrong size -__- turns out, I figured it causes the traction control to turn on unnecessarily whenever I go over any small bumps that happen to be on the freeway.
Dealer says that the tires passed state inspection so they wouldn't do anything about them besides "recommending" me to buy the correct tire sizes. I wish they had at least told me that the tire sizes were a bit off at the time I bought it. Already a bit off topic and some griping, but damn I hate the dealership. The only good they've done so far was giving a free car wash, but even then it took over an hour after I was told it was ready and they left swirl marks everywhere.
 
#15 ·
So, do you think your rears are slipping because your traction control is cutting in and out, and the reason for that is your dealer sold you an improperly equipped car? I think your pretty much on topic.

You know if you get in an accident the dealer could be liable, specially in the good old USA.
 
#18 ·
Here's the answers for you:

1) Most vehicles today which are equipped with TPMS are required to have all (4) tires changed when replacing tires. The reason being is the some TPMS systems are more sensative than others and even the slightest difference in tread height (or tread wear) can cause the TPMS to falsely activate such systems as ABS and/or TCS. Due to the differences in tires (sizing or tread height), the systems sense the variance tire rotations and the car (or systems) believe that there is slippage (tire not adhering to road surface).

Yes, it's costly to replace all 4 tires if only needing two - but due to the vehicle technology today, you can either live with it (or should have done more research due to higher maintenance costs) or you can find ways to cheat or bypass such sensor systems.

2) You stated you have the Track model. Based on that alone, don't the Track models come with 19" "Summer Only" tires? If so, that is anohter issue. Most tire manufacturers will deem tires "Summer Only" for geograhic locations that are mainly 1) dry and 2) do not experience the 4 Seasons as far as rain/snow/ice. A "Summer Only" tire is mainly designed for warm to hot DRY traction and usually are NOT safe running at speed during wet, icy or snowy conditions. Those are NOT All Season radial tires and grip is greatly diminished in such conditions.

Factually speaking, I've had performance vehicles with both All Season and "Summer Only" tires - there's a definitive difference in performance of both and a very NOTICEABLE difference running Summer Only tires in bad weather.

Definitely get the correct size/type of tires back on that vehicle.
 
#20 · (Edited)
Here's the answers for you:

1) Most vehicles today which are equipped with TPMS
Good points, but I'm pretty sure you mean TCS, not Tire Pressure Monitoring System :)

Me and you have different meanings for the word "slipping".
If there's "slipping" involved I'm probably looking at the person behind me through my passenger window.
TCS works on the engineer's definition of slipping. That is the tire moving sliding relative to the pavement. This starts happening long before you lose all traction and start doing 360s down the highway. In fact it happens all the time during normal driving and TCS ignores slight slips. Thats why a square setup makes the car suck, because TCS becomes super neurotic about the slips that are always happening and cuts back powah.
 
#21 · (Edited)
if you're not out of control? then you're not in control! lol

ok all jking aside, personally never happened but i've noticed that when the TCS is on then even minor slips the car tends to wiggle around because the computer thinks your' gonna spin out or go out of control. But having it off tends to give you more control and less TCS over taking the car :D try it!
 
#23 ·
car drives fine in the rain, keep yer damn boot out of it. I know punching it in any gear below 5th will get ya sideways in the wet stuff.

Also, TCS is for chumps. (flame suit on)
 
#27 ·
^^ This. In RWD, it's a technique / driver issue.

You can't do in RWD what you can in FWD.

I've tracked it with TCS on and off. I found with it on to be pretty helpfully calibrated for the average civilian, just don't mash the throttle. If you do, the cut out will be more pronounced.
 
#24 ·
2013 3.8 track automatic

I live in south florida and recently i have had problems with the rear tires in the rain, and in normal weather. I have 1,500 miles, but still am have pretty bad slipping issues. I noticed it occurs during higher alteration, and turning :(. I haven't done much to damage the treads (no burnouts or anything like that) but i feel as if i am losing major grip. If you have any advice or any ideas of what might fix the problems, please let me know. Btw my rear tires are 245/40-19. Y rated
 
#25 ·
I live in south florida and recently i have had problems with the rear tires in the rain, and in normal weather. I have 1,500 miles, but still am have pretty bad slipping issues. I noticed it occurs during higher alteration, and turning :(. I haven't done much to damage the treads (no burnouts or anything like that) but i feel as if i am losing major grip. If you have any advice or any ideas of what might fix the problems, please let me know. Btw my rear tires are 245/40-19. Y rated
Stock track tires suck in the rain and cold, when you need to replace them get anything else but those, don't worry they will wear out soon.
 
#26 ·
I've had no problem thus far in the rain. I switched to Continental DWS Ultra High Performance All-Season tires (225/40/19 for fronts and 245/40/19 for rears) a week after I got my Gen Coupe last December. In that span of time from then to now, I've driven in heavy downpours numerous times of speeds up to 80mph. I can happily say that I have yet to experience any sort of hydroplane or slippage from the car. With these tires, I'm able to drive the car as if the pavement was dry. If it's that bad for you, I'd recommend getting new tires.
 
#31 ·
is no one commenting on the fact that his 4 tires are exactly the same dimensions?

the Gen does really wonky things with TCS when the tires aren't the proper size and ratio between front and back.

there have been numerous cases on this forum where people who had the wrong spec tires (or had them on backwards) had seriously dangerous issues with TCS and the car accelerating all by itself.

the car is confused because the computer is not getting the proper information from mismatched tires. And throttle, brakes, etc... WILL get wierd on you when you least want it.

the rain is just a prelude.

DO NOT LET THE DEALER GET AWAY WITH IT.
 
#34 ·
Did you not seen the dates? The OP is from a couple years ago and after he posts About his square setup, people make the TCS comment. Then another member revived the thread with a similar issue but the right tire sizes a few posts back. Chill out.

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