Has anyone got any experience to share about Dunlop SP Sport Maxx 295/35/21 for Cayenne.

Damaged one of the tires on mine so need to now change all 4
Thanks to "world class" roads in Ottawa, Canada

It seems these Dunlops come OEM on Audi Q7

 

Apologies in advance, as this may not be what you are looking for. But by responding I'm bumping your thread back up top ;-)

I do not have experience with those Dunlop's on a Cayenne,... but I DID drive them in a comparison in the Michelin Driving Experience last week. Here's how they configured it.

Both drives were on two different 991 C2S's.

The first was with Michelin SSC2's on the front, and Dunlop Sport Maxx on the back. While it was a blast to drive, with all the sidewayz drifting I was able to inflict, it was clear Michelin wanted to prove how NOT to mix & match front's & rear's.

The next drive was with the SSC2's all the way around. Noticeable difference.

It was FUN!! But does it apply to the Cayenne? probably not.

But it would also help if you gave us some info on your typical use of your Cayenne.

What are your top priorities in tire choice? ie...

I autocross mine,... but if you do not,.. then our tires choice will differ.

Are you taking long trips & therefore a quiet running tire is most important?

Or mostly around town & daily commute?

There are plenty of RL Dunlop guys that can hopefully help you compare/contrast the different Dunlop options.

 

Thanks for the great info and showing me how I missed writing about my usage (when things are so clear in ones head!!)

Cayenne is my daily driver mostly highway and once in couple of months a long trip of about 1000km.

The michelins which came OEM with the Cayenne are not much to write about they have just about 9000km on them and the tread is down to 5-7 , not sure if this normal.

 

First 25km on the Dunlops, finding the rider softer than with Michelins!

Will update when I have about 2-3000km on them.

 

Be careful not to compare your old tires, which probably had heavily worn tread,... against new tires with fresh rubber & taller tread.

Can you remember back when you Michelin's were fresh & brand new, so that you can compare apples to apples?

just sayin'

 

I've tried a few different brands in the span of six years. Here's my take on this:

https://rennlist.com/forums/porsche-...l#post12545303

 

I agree Andy. I'm a Michelin guy myself too. But I autocross my CTT, so all bets are off on my mileage.

Plus I didn't really want to spur discontent when Seafarer has already purchased his Dunlops.
I've never been a Dunlop guy, but my bias goes waaay back many years, so I have no recent experience to ding them. .... Other than the Drive& Compare I just did in 991S.

 

Thanks for all the good info.

Would have preferred to go with Michelins, but they seem to be back ordered in Canada at least, and I needed tires in a hurry.

These dunlops come OEM in Audi Q7.

I was comparing them to my OEM Michelins which have only about 9000km on them.

Well! Already bought and installed the dunlops now, as they were the only ones available in a hurry.
Need to drive around a friend from overseas and did not want to do it in the wife's Lexus RX 350, 2016 ( which to me has always been boring and a bit like a dependable boat ride)

 

Finally managed to get upto highway speeds(120KMPH/75MPH) on the Dunlops.
Incredible amount of vibration through the steering wheel and the floor, so much that the steering wheel heating was coming on /off without even my touching it.
No vibration at all below this speed. Immediately thought of wheel balancing or maybe the rim being damaged!!!

Now after driving a few miles at these speeds the vibration is almost gone, to very very slight feel of it, if I pay attention.

Any thoughts from the experts here? (Its a 2015 Cayenne S)

 

Before we suspect the Dunlops themselves...

My immediate thoughts turn to HOW they were balanced.

Did they use a Road Force Balancer? If so, what kind,... Hunter? There are different brands that can give you varying amounts of data.

Road Force Balancing will also assist in telling you WHERE to place your tire ON the rim (eg, location changes by rotating the tires to new locations on the rims to give you the least amount of vibration). Rim deflection verses tire deflection, thus allowing you to place the tire on the rim in optimal position.

Plus RF Balancing will assist in telling you WHICH rim/tire to place in EACH of your four corners.

And to go one step further, you can plug in which vehicle you are putting these tires/rims on, so that it understands what thresholds need to be met.

To give you my example. I just had 4 new Michelin Lattitude Sport 3's mounted on my 21's.
I did NOT leave my Cayenne with them to do this work. I swapped my winter setup onto the Cayenne, so I could bring & leave them, without losing time in my DD.

Each rim/tire is numbered (wax crayon, or if you are like me, and keep track of which wheel is where throughout the life, I number my rims inside the hub), and then when the tech is balancing each of the 4 wheels, they will enter each number into the machine. That way at the end, it will give you the BEST location to put each one.

So when they finished the road force balancing, I had them GIVE ME the data sheets printed out from the Hunter RF Balancer.

Pictures will give you a better idea what these data sheets tell us. See below. Ideally you want low "Pull", as well as low Vibration. Sometimes you can't get the best of both those worlds, but Pull will end up being the most important once each rim/tire has been balanced optimally.

Hope this helps. If you did not have them RF Balanced, then get that done, before you suspect the tires themselves.

So for me, you'll see below, my best configuration will be:
Tire #1 on LF
Tire #2 on RR
Tire #3 on LR
Tire #4 on RF
=Steve

 

Thanks Steve,

Great info as always.

The balancing was done on Hunter Road Force. same as the picture
I was there while this was being done, even though a novice at this, I did see the tech check out the rims and tires and he changed the positions of the rims around after verifying some figures on the machine.

And he did confirm the model year etc and plugged that in the machine.

The thing for me to figure out is why has the vibration reduced and almost vanished?

 

Hmmm, now that will probably be more difficult to answer...

I guess I could acknowledge "some" vibration upon initial break-in of the rubber,... and scuffing off the mold release,... which in most cases does take up to 500 miles. But you were describing such a huge vibration that it was actually knocking your steering wheel heater switch on!! Holy cow.

http://tires.tirerack.com/tires/Mold%20Release

but you also have not said if you are running OEM Porsche rims or something aftermarket. If aftermarket, there could be a whole host of other things going on. I suspect you are on original "Cayenne" quality forged rims.

Maybe read up on some of these other culprits,.. to see if anything rings a bell for you...

http://blog.tirerack.com/blog/docs-a...at-should-i-do

=Steve

 

I've seen this happen before and in most cases, it's foreign debris that eventually falls off.

I've also seen situations where over-torqued rims (particularly steel rims) can cause warpage and subsequent vibration. Most shops use a pneumatic gun with an adjustable torque setting to tighten the wheel bolts. These guns are never serviced and will hardly come close to providing the proper torque specification.

FWIW, your rims should be torqued to 118 ft.lbs.

 

Thanks for all the info and help.

I am leaning towards some debris stuck somewhere and now having fallen off. The vibration is almost non-existent upto at least 130KMPH/81MPH. And that too I am not sure is it really there or am I just feeling it.

BTW the rims are OEM.

Will watch for a few days whenever I can get upto good speeds on the highway.
Will update if anything changes.

Thanks once again, I did at least learn what the hell balancing is all about.