2014 RT front tires wearing unevenly at 12k miles - what's going on?

[UtahPete]

Pulling the bike into the garage I noticed the treads of the front tires are wearing unevenly. The dust on the garage floor attached to the high points and not to the low points. This is my wife's bike we bought used at 11k miles and it had previously been laser aligned at about 9k.

I know we have some very knowledgeable tires folks on this forum; what do you think is going on with the LF tire particularly? (They're both set at 20psi)

 

[canamjhb]

Looks like cupping to me. My OEM tires are doing the same. Can't wait to trade them for real tires.

 

[Peter Aawen]

That does look like abnormal wear, & of a type not uncommon on the OE Spec Kendas.... :sour:

Generally, on most vehicles, cupping like that is most likely going to be due to worn or damaged/bent suspension components, sometimes worn steering components, & very occasionally tire balance or construction problems; but on Spyders running OE Spec Kendas it has often been the result of poorly balanced tires (often associated with dodgy tire construction) or incorrect inflation pressures for the tire/load..... Still, I'd suggest you take the Spyder in to a GOOD wheel alignment/tire balancing place & get the tires inspected & balance checked very carefully before you start worrying about it being worn suspension components...

But honestly, IMHO your BEST solution is to fit some 'real' tires that behave & wear like proper passenger car tires do & should & then run them at pressures appropriate for the lighter load... Do that, & I sincerly doubt you'll regret it. :2thumbs:

 

[Gator37]

Tires

Well you are not alone. I have a 2014 RT too and it was pointed out to me at Red Rock by TricLed that the front tires are at the wear bars. They are cupping to and have always been run at around 18 psi. They are OEM and have never heard anything good about them. Thinking of getting some car type tires put on if I can find them. Tires are cheap insurance, learned the hard way when I blew a rear tire on a Honda 750 I had back in '78 and went down hard.
Take care and stay SAFE.

 

[UtahPete]

That does look like abnormal wear, & of a type not uncommon on the OE Spec Kendas....

Generally, on most vehicles, cupping like that is most likely going to be due to worn or damaged/bent suspension components, sometimes worn steering components, & very occasionally tire balance or construction problems; but on Spyders running OE Spec Kendas it has often been the result of poorly balanced tires (often associated with dodgy tire construction) or incorrect inflation pressures for the tire/load..... Still, I'd suggest you take the Spyder in to a GOOD wheel alignment/tire balancing place & get the tires inspected & balance checked very carefully before you start worrying about it being worn suspension components...

But honestly, IMHO your BEST solution is to fit some 'real' tires that behave & wear like proper passenger car tires do & should & then run them at pressures appropriate for the lighter load... Do that, & I sincerely doubt you'll regret it.

Yes, if it was my car tires I would suspect balance / alignment issues because of the cupping / scrubbing pattern, but being a Spyder I'm not so sure. I've heard of people getting 20k miles on the Kenda but I would imagine that's only if balance / alignment issues are caught in time. Thanks.

 

[UtahPete]

Well you are not alone. I have a 2014 RT too and it was pointed out to me at Red Rock by TricLed that the front tires are at the wear bars. They are cupping to and have always been run at around 18 psi. They are OEM and have never heard anything good about them. Thinking of getting some car type tires put on if I can find them. Tires are cheap insurance, learned the hard way when I blew a rear tire on a Honda 750 I had back in '78 and went down hard.
Take care and stay SAFE.

The nice thing about these is being front wheels, they are a simple matter to remove and have them balance checked if that's the likely cause. The rear, on the other hand ....!

 

[Deanna777]

I also have a 2014RTS-SE6 Cognac, and I changed the front tires last year @ 12,807 miles( no reason). I am now running Continental Contiprocontact's ( size: 165/60 R15) @ 19PSI.

I have 8,993 miles on the Continental Contiprocontact's, I like them. I have not had any problems with these tires.

Deanna

 

[BLUEKNIGHT911]

CUPPING ETC.

Yes, if it was my car tires I would suspect balance / alignment issues because of the cupping / scrubbing pattern, but being a Spyder I'm not so sure. I've heard of people getting 20k miles on the Kenda but I would imagine that's only if balance / alignment issues are caught in time. Thanks.

Generally speaking ....I HATE KENDA - CRAPENDA TIRES .... however I know tires and for the front they will be minimally satisfactory .... they will ONlY work if they are " perfect tires " perfectly balanced and aligned ..... I highly recommend the Lazer alignment ... However it can't cure Crappy tires ...nothing can ..... over to you Peter :thumbup: :roflblack:.......... Mike :thumbup:

 

[canamjhb]

My cupping was probably due to poor alignment. Had the bike laser aligned last week at Red Rock and it was out of alignment from the factory. The 2014s were the last of the softer rubber compound, I believe. From what I have learned, this is a very common issue with the soft Kenda tires. I visited a friend today who has a 2015 with Kendas and he has no noticeable cupping and double the miles I have on mine. Read the threads from Peter and Blueknight and you will learn a lot.

 

[canamjhb]

You inspired me to take action. Ordered Federal Formoza AOZ1 tires tonight. Now anxious to get them.

 

[SpyderAnn01]

You inspired me to take action. Ordered Federal Formoza AOZ1 tires tonight. Now anxious to get them.

Where did you find them?

 

[canamjhb]

Hi Ann. I found them at Superbuytires.com. Holding my breath to see if they are shipped or out of stock like everyone else. (Very nice meeting you and Joe at RR)

 

[BLUEKNIGHT911]

BALANCE FOR REAR TIRE

The nice thing about these is being front wheels, they are a simple matter to remove and have them balance checked if that's the likely cause. The rear, on the other hand ....!

Pete, my last three rear tires ...I did not balance and had NO issues ..... I think the rear suspension arm supports and contains the rear wheel to an extent that it minimizes any imbalance as long as it's small .... most Car tires are not likely to need balancing for the rear wheel ( only the rear ) .............. Mike :thumbup:

 

[Peter Aawen]

Generally speaking ....I HATE KENDA - CRAPENDA TIRES .......
........
However it can't cure Crappy tires ...nothing can ..... over to you Peter :thumbup: :roflblack:.......... Mike :thumbup:

My turn?

I agree they are pretty much mediocre in all respects Mike, but you do know that there IS one sure fire use where those Kenda-crapenda's work brilliantly every time!??





Just take them off your Spyder & the rims, put them in the middle of the road, & add about 1/2 gall of accellerant & a lit match, then they WILL attract a lot of attention if there's anyone around!! hyea:



And nothing sorts 'em out anywhere near as properly EVERY time!! :2thumbs:






Not much else they are really all that good for tho! :dontknow:

 

[BLUEKNIGHT911]

CRAPENDA 'S

My turn?

I agree they are pretty much mediocre in all respects Mike, but you do know that there IS one sure fire use where those Kenda-crapenda's work brilliantly every time!??





Just take them off your Spyder & the rims, put them in the middle of the road, & add about 1/2 gall of accellerant & a lit match, then they WILL attract a lot of attention if there's anyone around!! hyea:



And nothing sorts 'em out anywhere near as properly EVERY time!! :2thumbs:






Not much else they are really all that good for tho! :dontknow:

:bowdown: :roflblack: :roflblack: :roflblack: :roflblack: :roflblack: ..... I've been using CAR tires since 09 and was never sorry about the Switch ..... Mike :thumbup:

 

[Buckeye Chuck 54]

Tire wear

My OEM Kenda's lasted 23,000 miles. I though that wasn't bad, I could live with that. Then I had my '14 RT-S laser aligned.
The second set lasted less than 6000. I thought they screwed up the alignment and took it back. But it tested spot on.
I don't use Kenda tires any longer. The Federal Formoza tires are getting lots of good talk here, my friend Buckeye Bleau put a set on his '13 RT-L and loves them.
Be my next set.
Chuck

 

[UtahPete]

You inspired me to take action. Ordered Federal Formoza AOZ1 tires tonight. Now anxious to get them.

Anyone know where Formoza tires are made? I'm guessing Formosa (Taiwan) from the name.

 

[UtahPete]

You inspired me to take action. Ordered Federal Formoza AOZ1 tires tonight. Now anxious to get them.

For our tire experts; when spec'ing Federal Formoza tires, are you recommending the all-season AZ01 or the high-performance FD2? Maybe the AZ01 is being replaced by the FD2, which seems to have better specs for our application, particularly re: hydroplaning. I don't know if the load rating or tire construction is the same between them. Can anyone with knowledge of this tire please comment? Thanks.

1. Variable sub-grooves in the shoulder blocks further reduces impact noise for improved noise comfort.
2. 3-in-1 innovative groove design reduces vibration and pulsation frequency disturbing even to the most discerning driver.
3. Wider Solid Central Rib increases straight line stability and on-center feel.
4. Wide circumferential grooves and tread pattern promotes rapid water evacuation and prevents hydro-planing for confident and safe driving on wet/damp surfaces.
5. Computer-designed tread elements & finite element modeling for a stable footprint and give even and longer tread wear.

 

[BLUEKNIGHT911]

FORMOSA TIRES

For our tire experts; when spec'ing Federal Formoza tires, are you recommending the all-season AZ01 or the high-performance FD2? Maybe the AZ01 is being replaced by the FD2, which seems to have better specs for our application, particularly re: hydroplaning. I don't know if the load rating or tire construction is the same between them. Can anyone with knowledge of this tire please comment? Thanks.

1. Variable sub-grooves in the shoulder blocks further reduces impact noise for improved noise comfort.
2. 3-in-1 innovative groove design reduces vibration and pulsation frequency disturbing even to the most discerning driver.
3. Wider Solid Central Rib increases straight line stability and on-center feel.
4. Wide circumferential grooves and tread pattern promotes rapid water evacuation and prevents hydro-planing for confident and safe driving on wet/damp surfaces.
5. Computer-designed tread elements & finite element modeling for a stable footprint and give even and longer tread wear.

IMHO .... I liked the AZ01 much better that the " EVO " model ..... The FD2 sounds like a good re-placement ..... Mike :thumbup:

 

[UtahPete]

IMHO .... I liked the AZ01 much better that the " EVO " model ..... The FD2 sounds like a good re-placement ..... Mike :thumbup:

And, it seems to be more readily available than the AZ01. EVOs are still plentiful.

How do you think it compares to the Kumho for the front tire? Which Kumho are you recommending?