Kenda Kruz 673 170/80/15 rear tire - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 12 (permalink) Old 03-22-2009, 12:53 PM Thread Starter
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Kenda Kruz 673 170/80/15 rear tire

Hello all,

I wanted to go to the oversized tires for stability/speed issues. The Kendas are amazing.

When I got the bike it had squared off dunlops on it. I had to drive it from purchase point to my place, so I took the only thing that was available locally - Dunlop 404s. They made a huge upgrade over the worn out dunlops that came on the bike.

However, they seem to wander all over the shaved roadways in Miami, making my rides far less comfortable than I'd like.

Additionally, I'm thinking about taking some longer trips, so anything that would give me more speed at less RPMs seemed worth looking into.

I ordered an oversized front and rear from Trax Motorsports. For some reason only the rear tire shipped, and I got it two days ago. I'm still in the process of getting the front sent to me.

Yesterday I pulled the rear wheel (which also let me relocate the R+R easier) and took the wheel and the new tire to a downscale motorcycle/scooter shop in Miami. $10 for the tire change, while I waited. Oh yes. I'm bringing those guys some pastries when I go back with the front wheel.

There were no difficulties in getting the wheel back in, and clearance is ample in all dimensions. I had the bike on the centerstand and used a tie down ($10 for 4 at Harbor Freight) to slightly (1 inch?) compress the front forks. The one other thing I did was mate the wheel and the final drive (and drum brake cover, of course) before putting them all under the fender. I didn't even have to take off the license plate. Oh, and I used my 2 foot length of pipe (breaker bar) under the tire as a lever to lift the re-attached wheel so I could more easily reinstall the shocks.

I set the pressure to 37psi, and took it out this morning. For anyone who is curious, I weigh 140 and have the rear shocks empty (no air pumped in for assist) and the dampers set to 1.

While the tire didn't look hugely different on the bike, the change totally amazing. (Granted, I'm only comparing it to new stock Dunlops.)

First off, the handling was **vastly improved**. The bike leaned more smoothly into highway corners, and seemed to grip the roadway better. It just stuck where I put it with no drifting. The bike also seemed to absorb all the road groves/lines much easier - there was little or no shimmy or wandering. In a weird way I felt slightly disconnected from the roadway, but then again I'm used to feeling most of the tiny road irregularities. I admit to being completely surprised at the difference in handling that only changing the rear tire has brought about. I had assumed that the tread pattern on the Front dunlop was making the bike track the shaved roadways. Now, I'm very curious to see what replacing the front tire (when it comes) will do.

The RPMs were down at highway speed, but not drastically so, maybe 500? The bike also seemed a hair slower on take off, but there's still plenty of zip to her. I suspect that I'll get some small benefit in gas mileage on long trips. The real difference though is the handling, which is phenomenal.

From what I read, I may have to replace this tire more often than the dunlops, but really don't care about that. The ride feel is so much better, it's worth not getting the extra X miles out of the tire IF it proves to wear quicker.

I'm getting some RideOn sent to me, and when I install it and the front tire, I'll note whatever changes that makes.

Thanks again everyone - I wouldn't even have known this option was out there if it weren't for people posting and sharing what they know.

Scheherazade
'86 VN750
MF Battery, Iridium Plugs, RR relocated, Voltmeter, 170/80/15 Kenda Kruz rear tire, DIY Samsonite hard bags, DIY shaved seat with Beaded seat pad ('cause that's how I roll) and the dreaded STATOR CHANGE.

Shining Black Bess '86 VN750, retired for parts after a fried stator and being knocked (kee-runch) in her parking spot.
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post #2 of 12 (permalink) Old 03-22-2009, 09:16 PM
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good write up...
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post #3 of 12 (permalink) Old 06-07-2009, 11:06 AM
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Kenda Kruz

You'll love the bike even more when you get the front Kenda on there.

Glenn

1985 VN700
Saddle Bags
Small Sport Windshield
R/R moved
Home built coasters
Kaw touring front fender
1990 Fuel tank
Kenda Kruz 110/90-19 & 170/80-15 tires
NGK Iridium plugs
NGK plug caps and 7mm copper core wires.
Deer Whistles

My VN700 pic's

VROC #7740
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post #4 of 12 (permalink) Old 06-07-2009, 11:18 AM
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Glad they're working for you, keep in mind to ride conservately for the first 100+ miles or so to break the tires in. Then hit them twisties like theres no tomorrow....enjoy


Peace

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post #5 of 12 (permalink) Old 06-07-2009, 11:55 PM
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I just mounted a duro boulevard 150/90-15 and the tire is running fine but for some reason the crossmember of the center-stand is rubbing against the center tread of the tire tread. I noticed that there is a support brace on the right side of the rear swing-arm and the right side of the center stand is slipping past that brace where it seems like it should be resting. The clearance is close between the tire and the brace even when it's wresting in the proper place. So how did you mount an oversize tire without any clearance problems? And what should I do about my situation? I duct taped the pedal on the left of the bike to the rear passenger foot-peg as a temporary fix haha

1994 Kawasaki Vulcan 750 named Jinba Ittai (Japanese for "Horse and rider in perfect harmony").
Jardine Pipes
Splines Lubricated
Painted Instrument Bezels
Headlight Visor
Chrome engine guard
Leather Fork Bag (contents: Pressure gauge, tools, and a Book of Psalms)
Yuaso MF AGM Motocross battery
Kenda Kruz Front tire
Duro Boulevard rear tire

"Buy the ticket, take the ride."
-Hunter S. Thompson
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post #6 of 12 (permalink) Old 06-08-2009, 02:08 AM
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there must be something wrong with your centerstand,Although I am running the Dunlops, I am running over size 110/90 front and170/90 rear,personally don't know about the Kendas but going to the bigger size made a dramatic difference in my bike.I can drive in deeper and I can lay the bike down more and pick up the throttle sooner and harder than before with the stock size Dunlops I thought about the Kenda Cruz and the Avon venom,but they are pretty pricey compared to the 404's and I push mine pretty hard and don't feel like I have gotten near their limits .




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92 vn750(sold)
Current ride 05 1500 Classic FI
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post #7 of 12 (permalink) Old 06-08-2009, 08:24 AM Thread Starter
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Yeah, that does not sound normal. Post a pic or two?

Scheherazade
'86 VN750
MF Battery, Iridium Plugs, RR relocated, Voltmeter, 170/80/15 Kenda Kruz rear tire, DIY Samsonite hard bags, DIY shaved seat with Beaded seat pad ('cause that's how I roll) and the dreaded STATOR CHANGE.

Shining Black Bess '86 VN750, retired for parts after a fried stator and being knocked (kee-runch) in her parking spot.
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post #8 of 12 (permalink) Old 06-09-2009, 11:43 PM
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I have no clearance problems anywhere at all, with the oversize Kendas.

Glenn

1985 VN700
Saddle Bags
Small Sport Windshield
R/R moved
Home built coasters
Kaw touring front fender
1990 Fuel tank
Kenda Kruz 110/90-19 & 170/80-15 tires
NGK Iridium plugs
NGK plug caps and 7mm copper core wires.
Deer Whistles

My VN700 pic's

VROC #7740
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post #9 of 12 (permalink) Old 06-10-2009, 11:59 AM
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I also had the same slight tire rub on the center stand, I corrected this issue by zip tieing a peice of rubber door stop to the bottom of the swing arm to lower the center stand just a bit. Yo don't notice either the rubber or the zip tie and it has worked well for the past year.


Peace

"You came out of your mom looking like SHlT. She thought you were beautiful. Don't know what scared me most, your looks or her judgment."











Pictures of the "Ladies"
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post #10 of 12 (permalink) Old 06-15-2009, 02:33 PM
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I'd post pics if I could find that upload cable for my camera haha. I have the same pipes as you do wkrizan and I'm thinking that they have something to do with it. Where exactly is the center-stand supposed to rest with a stock configuration?

1994 Kawasaki Vulcan 750 named Jinba Ittai (Japanese for "Horse and rider in perfect harmony").
Jardine Pipes
Splines Lubricated
Painted Instrument Bezels
Headlight Visor
Chrome engine guard
Leather Fork Bag (contents: Pressure gauge, tools, and a Book of Psalms)
Yuaso MF AGM Motocross battery
Kenda Kruz Front tire
Duro Boulevard rear tire

"Buy the ticket, take the ride."
-Hunter S. Thompson
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