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Scooters - Big Bore => Xciting 700i => Topic started by: PiotrKymco on November 20, 2019, 09:08:53 PM

Title: Rear tire cracks
Post by: PiotrKymco on November 20, 2019, 09:08:53 PM
That is rediculous, I've never seen such thing before. Rear tire just crack in several places despite of the fact that is still roadable. Of course is Maxxis. WTF is wrong with this tire??? There is no other producer 69 load only 65 but I wont buy Maxxis anymore. And what is the most important thing how to remove rear wheel? Any vdeo or information? Must change that tire because affraid to ride.
Title: Re: Rear tire cracks
Post by: john grinsel on November 20, 2019, 09:42:11 PM
How old is tire?   Date can be read on sidewall.
Title: Re: Rear tire cracks
Post by: CROSSBOLT on November 20, 2019, 09:54:05 PM
Maxxis is Kymco's OEM favorite for tires and they are terrible! They wear fast and they crack early. Any major brand is better especially not following every tar snake or groove. Removing rear wheel is labor intensive. I have a Downtown 300i and ASSUME it is similar to the 700i so beware! First, take  deep breath, you will be here awhile! Remove muffler at the forward clamp to exhaust pipe. This avoids having to disturb O2 sensor. 2. Remove seat and cargo tub. 3. Remove right rear shock. 4. Remove rear wheel nut. Use a hard/soft but stout stick to block wheel rotation. 5. Remove rear wheel brake and let hose stay attached. Support with wire or lay on floor out of way. 6. Remove  all the bolts holding right swingarm cast plate. 7. The hard part is removing this plate the first time. It SHOULD come straight off but the inner bearing race and the shaft get rusty. Use a puller if possible or pry carefully with wrenches or prybars. The main thing is NO HAMMERS! It comes STRAIGHT OFF! Use penetrating stuff if you have some, light oil. Patience and persistance! 8. You may have a short fender to remove then the wheel.
Title: Re: Rear tire cracks
Post by: Tromper on November 21, 2019, 02:47:19 AM
Not sure where Load 69 comes in.
I checked Maxxis site, & older data and found one tire in that size, the M6135.

This tire shows a load rating of 66 like all the other tires I found in the range.
Die the 700 use a different, now discontinued tire?

...There is no other producer 69 load only 65 but I wont buy Maxxis anymore. And what is the most important thing how to remove rear wheel?...

Title: Re: Rear tire cracks
Post by: PiotrKymco on November 21, 2019, 08:45:25 AM
Maxxis is Kymco's OEM favorite for tires and they are terrible! They wear fast and they crack early. Any major brand is better especially not following every tar snake or groove. Removing rear wheel is labor intensive. I have a Downtown 300i and ASSUME it is similar to the 700i so beware! First, take  deep breath, you will be here awhile! Remove muffler at the forward clamp to exhaust pipe. This avoids having to disturb O2 sensor. 2. Remove seat and cargo tub. 3. Remove right rear shock. 4. Remove rear wheel nut. Use a hard/soft but stout stick to block wheel rotation. 5. Remove rear wheel brake and let hose stay attached. Support with wire or lay on floor out of way. 6. Remove  all the bolts holding right swingarm cast plate. 7. The hard part is removing this plate the first time. It SHOULD come straight off but the inner bearing race and the shaft get rusty. Use a puller if possible or pry carefully with wrenches or prybars. The main thing is NO HAMMERS! It comes STRAIGHT OFF! Use penetrating stuff if you have some, light oil. Patience and persistance! 8. You may have a short fender to remove then the wheel.

Oh Man, that looks like hours spending in my garage. I'm so pissed you can not imagine because tire is in very good condition apart from cracks.
Title: Re: Rear tire cracks
Post by: Stig / Major Tom on November 21, 2019, 12:20:51 PM
Check price dealer would charge. They can take shortcuts we don't know.
Dealer charged me $130 to install set of Michelins onto my Kymco scooter .
Might be worth it.....
Stig
Title: Re: Rear tire cracks
Post by: PiotrKymco on November 21, 2019, 08:21:19 PM
Not sure where Load 69 comes in.
I checked Maxxis site, & older data and found one tire in that size, the M6135.

This tire shows a load rating of 66 like all the other tires I found in the range.
Die the 700 use a different, now discontinued tire?

Regarding the picture, are you sure I can remove right swing arm plate without removing pipes?
Title: Re: Rear tire cracks
Post by: PiotrKymco on November 21, 2019, 08:23:13 PM
Maxxis is Kymco's OEM favorite for tires and they are terrible! They wear fast and they crack early. Any major brand is better especially not following every tar snake or groove. Removing rear wheel is labor intensive. I have a Downtown 300i and ASSUME it is similar to the 700i so beware! First, take  deep breath, you will be here awhile! Remove muffler at the forward clamp to exhaust pipe. This avoids having to disturb O2 sensor. 2. Remove seat and cargo tub. 3. Remove right rear shock. 4. Remove rear wheel nut. Use a hard/soft but stout stick to block wheel rotation. 5. Remove rear wheel brake and let hose stay attached. Support with wire or lay on floor out of way. 6. Remove  all the bolts holding right swingarm cast plate. 7. The hard part is removing this plate the first time. It SHOULD come straight off but the inner bearing race and the shaft get rusty. Use a puller if possible or pry carefully with wrenches or prybars. The main thing is NO HAMMERS! It comes STRAIGHT OFF! Use penetrating stuff if you have some, light oil. Patience and persistance! 8. You may have a short fender to remove then the wheel.

Sorry CROSSBOLT previous quote was directed to you regarding swing arm. Her you can see the cracks.
Title: Re: Rear tire cracks
Post by: CROSSBOLT on November 21, 2019, 09:47:13 PM
Really bad cracks! Replace yesterday! Last week! Don't ride on those things! Don't even roll around in the driveway!
Title: Re: Rear tire cracks
Post by: john grinsel on November 22, 2019, 07:12:36 PM
Tire age is important in judging tires, period.
Title: Re: Rear tire cracks
Post by: monkeybongos on November 22, 2019, 10:20:39 PM
Correct.  Rubber loses it's pliability (= gripping ability) over time, so even if there aren't even tiny cracks older tires don't grab the road well, compromising your safety. 

Learned that from experience.
Title: Re: Rear tire cracks
Post by: MJR on November 23, 2019, 03:20:28 AM
Same crap that happened to mine. https://www.kymcoforum.com/index.php?topic=26153.0 (https://www.kymcoforum.com/index.php?topic=26153.0)

(https://live.staticflickr.com/1725/28852400478_48536348aa_c.jpg)

Not sure where Load 69 comes in.
I checked Maxxis site, & older data and found one tire in that size, the M6135.

This tire shows a load rating of 66 like all the other tires I found in the range.
Die the 700 use a different, now discontinued tire?

Not sure what model the rear tire was but it did show 69H for rating on the tire according to my old photos. I replaced it with the same size Bridgestone TH01R that my Burgman 650 uses. A special note I had a problem with the Bridgestone as well after a tire puncture but I think part of that problem is that Kymco lists too low of tire pressures for the weight of the bike (650 lbs) vs the Burgman 650 (615 lbs) which is 35 lbs lighter. I am now running 32 psi front and 36 psi rear in my Bridgestone vs the factory suggestion of 29 psi front and 32 psi rear.
Title: Re: Rear tire cracks
Post by: MJR on November 23, 2019, 03:32:04 AM
Regarding the picture, are you sure I can remove right swing arm plate without removing pipes?

The muffler has to come off. You can get the swing arm off after that with a pry bar holding the forward pipe out a bit. I ended up doing this on the centerstand, disconnected the rear shocks at the swing arm, pushed it up, prying on the exhaust pipe, and slid off the right side of the swing arm. You will need a long Allen wrench/socket to get at the bolts recessed in the swing arm.
Title: Re: Rear tire cracks
Post by: Tromper on November 23, 2019, 05:55:15 AM
Actually got a clear look of the tire on the other thread.

Sure 'nuff 69H.  I wonder if there was a variant of that tire that was a bit harder (and tended to crack) for the 700?

The TH01's a decent tire, kinda pricey these days so I run shinko's on my burger.
Odd that the burger wants 41 psi on the tire vs. the OEM on the 700.


Not sure what model the rear tire was but it did show 69H for rating on the tire according to my old photos. I replaced it with the same size Bridgestone TH01R that my Burgman 650 uses. A special note I had a problem with the Bridgestone as well after a tire puncture but I think part of that problem is that Kymco lists too low of tire pressures for the weight of the bike (650 lbs) vs the Burgman 650 (615 lbs) which is 35 lbs lighter. I am now running 32 psi front and 36 psi rear in my Bridgestone vs the factory suggestion of 29 psi front and 32 psi rear.
Title: Re: Rear tire cracks
Post by: MJR on November 23, 2019, 06:52:31 AM
Actually got a clear look of the tire on the other thread.

Sure 'nuff 69H.  I wonder if there was a variant of that tire that was a bit harder (and tended to crack) for the 700?

The TH01's a decent tire, kinda pricey these days so I run shinko's on my burger.
Odd that the burger wants 41 psi on the tire vs. the OEM on the 700.

Dunno but after my experience with them I'm glad they never sold the tires here in the US. I had wanted to buy a set to try on the B650 years ago. The Bridgestones have been the best tires for mileage on my 650's. The Pirellis wore out way too fast (5,000 miles). A friend had tried Shinkos to have them bubble/tread separate so I've never been interested in them and according to LeDude's review they are undersized somewhat. I had imported a pair of Dunlop ScootSmart tires, I wasn't so impressed with the front tire but I got around 11,000 miles out of the rear. I wish they sold them here, just wasn't worth the cost to import another set vs the Bridgestones.

Burgman 650 weight 615 lbs, recommended tire pressures 33 psi front, 38 psi rear single rider/41 psi with passenger. I run 35 psi front and 39 psi rear.
MyRoad 700i weight 650 lbs, recommend tire pressures 29 psi front, 32 psi rear single rider/35.5 psi with passenger. I now run 32 psi front and 36 psi rear.
Title: Re: Rear tire cracks
Post by: PiotrKymco on November 23, 2019, 10:43:11 AM
Same crap that happened to mine. https://www.kymcoforum.com/index.php?topic=26153.0 (https://www.kymcoforum.com/index.php?topic=26153.0)

(https://live.staticflickr.com/1725/28852400478_48536348aa_c.jpg)

Not sure what model the rear tire was but it did show 69H for rating on the tire according to my old photos. I replaced it with the same size Bridgestone TH01R that my Burgman 650 uses. A special note I had a problem with the Bridgestone as well after a tire puncture but I think part of that problem is that Kymco lists too low of tire pressures for the weight of the bike (650 lbs) vs the Burgman 650 (615 lbs) which is 35 lbs lighter. I am now running 32 psi front and 36 psi rear in my Bridgestone vs the factory suggestion of 29 psi front and 32 psi rear.

I bought new tire Pirelli Diablo Scooter 160/60R14 ŚWIEŻE 160/60-14, hope will be ok for my beast. Any comments regarding that tire? I stay away from Maxxis tires.
Title: Re: Rear tire cracks
Post by: MJR on November 23, 2019, 02:13:43 PM
I bought new tire Pirelli Diablo Scooter 160/60R14 ŚWIEŻE 160/60-14, hope will be ok for my beast. Any comments regarding that tire? I stay away from Maxxis tires.

If it's this Diablo https://www.amazon.com/Pirelli-Diablo-Scooter-Moped-60-14/dp/B000GV85PA (https://www.amazon.com/Pirelli-Diablo-Scooter-Moped-60-14/dp/B000GV85PA) you will be lucky to get 5,000 miles out of it. If it's the Diablo Russo I have no experience with it.
Title: Re: Rear tire cracks
Post by: john grinsel on November 23, 2019, 03:03:31 PM
Was your bike designed for radial tires?
Title: Re: Rear tire cracks
Post by: MJR on November 23, 2019, 11:35:03 PM
Was your bike designed for radial tires?

Factory equipped with radials.
Title: Re: Rear tire cracks
Post by: PiotrKymco on November 24, 2019, 11:34:10 AM
If it's this Diablo https://www.amazon.com/Pirelli-Diablo-Scooter-Moped-60-14/dp/B000GV85PA (https://www.amazon.com/Pirelli-Diablo-Scooter-Moped-60-14/dp/B000GV85PA) you will be lucky to get 5,000 miles out of it. If it's the Diablo Russo I have no experience with it.
Why you think only 5000miles and when Im lucky? Something wrong with that tires? That tires do not have bad opinion at all, so Im curious why?
Title: Re: Rear tire cracks
Post by: PiotrKymco on November 24, 2019, 12:18:56 PM
The muffler has to come off. You can get the swing arm off after that with a pry bar holding the forward pipe out a bit. I ended up doing this on the centerstand, disconnected the rear shocks at the swing arm, pushed it up, prying on the exhaust pipe, and slid off the right side of the swing arm. You will need a long Allen wrench/socket to get at the bolts recessed in the swing arm.
Do you have maybe bolt and nut torques? Especially for wheel nut and swing arm? If yes and Nm will be great.
Title: Re: Rear tire cracks
Post by: Stig / Major Tom on November 24, 2019, 04:43:15 PM
Same crap that happened to mine. https://www.kymcoforum.com/index.php?topic=26153.0 (https://www.kymcoforum.com/index.php?topic=26153.0)

(https://live.staticflickr.com/1725/28852400478_48536348aa_c.jpg)
Maybe Maxxis have a special blend which adds these "rain sipes" as the tire ages?
Stig
Title: Re: Rear tire cracks
Post by: john grinsel on November 24, 2019, 08:58:58 PM
Regardless of age, this tire is throwaway----although it will continue to hold air.
Title: Re: Rear tire cracks
Post by: MJR on November 25, 2019, 03:37:08 AM
Do you have maybe bolt and nut torques? Especially for wheel nut and swing arm? If yes and Nm will be great.

Sorry but the service manual lists them in kg-m so use a online converter to Nm.

Muffler mount bolt 3.2~3.8  kg-m
Exhaust pipe joint nut 1.0~1.4 kg-m
Exhaust pipe band bolt 1.0~1.4 kg-m
Rear swing arm Allen bolts 4 kgf•m
Rear lower shock mount 4.0 kgf•m
Rear axle nut 13 kgf•m
Rear caliper mounting 3.2 kgf•m

Why you think only 5000miles and when Im lucky? Something wrong with that tires? That tires do not have bad opinion at all, so Im curious why?

I've tried two sets on my B650 (same size), the last one was bald with cords showing with only 5,031 miles on them.