DRZ400S tire size options

Discussion in 'Thumpers' started by JustBob, Sep 23, 2012.

  1. Dirtnadvil

    Dirtnadvil Been here awhile

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    Do you guys have a favorite tire for loose sand. And no, I can't use a paddle tirewere I am headed:D......Thanks
    #21
  2. JustBob

    JustBob Uh...who me?

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    Now with about 300 miles on them off road I am very pleased. Longevity is still TBD but unless it's really bad I think I've found the tire for this bike. They were cheap too! $134 for the set at my door. :)
    #22
  3. nova2666

    nova2666 Adventurer

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    [​IMG]

    You can fit a Teraflex but I would not recommend with stock carb, pipe,etc. Oh, and make sure you get the US version or it will look like this,
    #23
  4. Number6

    Number6 mad as hell

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    Question: What are my options for rear tire size on the DRZ400S?
    Lemme explain:
    I am the proud new owner of a very well maintained 2006 DRZ400S. THe PO was obsessive about maintenance and particularly preventative maintenance and emergency preparedness. This translates into a very bulletproof DRZ, and is the reason I went with this bike even though it was slightly over my original budget.

    It also manifests itself in a very interesting problem. To minimize the number of different spare parts he needed to carry on long trips the PO replaced the front rim with another 18" rear rim. The rear is also lowered 2" and the stance is great -a lot closer to being like my old CB550 but with long travel suspension.

    I have ridden the bike at 65-70 highway speeds and have taken it onto some fire roads and up and down some rutted dirt hillsides and my only complaint is that i wish the front tire was a little narrower. ANd that might just be in my head. The tires it came with that I have been running are Kenda K270 4.50 x 18s

    So I guess I am asking what y'all think of running the two 120/90 18s or going with a narrower slightly higher profile front tire to give me a little more wiggle room in the ruts a little less rake?

    THat and what the size options would be, specifically for a narrower tire with a similar profile, given that rim size?
    #24
  5. Number6

    Number6 mad as hell

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    Bump-

    Really? No one has any input? I would even take some bad advice if nobody has any good.
    #25
  6. WayneJ

    WayneJ City Slicker

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    After a little over a year and 3300 miles I just replaced the 120/80 with a 130/80. The front will be good for at least 3300 more. Excellent tires on and off pavement. :deal

    [​IMG]
    #26
  7. Scotty P

    Scotty P Funny Like a Clown

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    Why am I subscribed to this thread.........I don't even own a DRZ:lol3

    Hey Wayne.
    #27
  8. WayneJ

    WayneJ City Slicker

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    What? Were you born yesterday? :norton

    I think your subconscious is telling you something. :lol3

    We should put a 18" front rim/tire on your KTM. Then it might be as fast as a DRZ. :nod
    #28
  9. Scotty P

    Scotty P Funny Like a Clown

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    Are you saying the n00b is too lazy to read this thread????:lol3

    I'm un-subscribing.......I think I was doing research for Weaver Dawgs DRZ

    Bye bye........
    #29
  10. oldenuf

    oldenuf Been here awhile

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    Bigger is better, right?
    #30
  11. rustycager

    rustycager Been here awhile

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    I have about 1200 miles on a used rear 130 rear that was almost new(13mm) with 900 on a front I put on. Front still looks new. I like everything but the mileage for the mostly pavement and gravel I've been riding on them. Running the back roads in the rain is no problem. Had the rear give a few times playing around on the street. Watch pushing it. I haven't got into the high speed stuff some of you do so can't say how different they are from street tires but they have done fine by me.

    Anyone went from t63 to a shinko 705? I'd like something more street that still works fine on gravel.
    #31
  12. Number6

    Number6 mad as hell

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    That's better. thanks for input...

    So more specifically I am looking for input about running two 18" rims and how to best rubberize them for mixed (80/20) riding.

    Right now they are both 120/90 and I have clocked 800 miles on these knobby kendas, and have decided they are probably the right tires for the job unless anybody has anything constructive to contribute.
    #32
  13. Number6

    Number6 mad as hell

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    Can you call someone who has been a member here longer than you a n00b?

    I am a n00b though. I have a lot of riding experience on the street, but aside from briefly owning a KLR650 that I quickly sold before I broke both me and it, I have no idea how a dirt bike needs to be set up and what to do to make the bike handle well off pavement.

    Add a few miles of dry creek beds to the list of terrain I have tested the two 4.50/18 rear knobbies on as of today. Why do I think a narrower taller front tire would be better? Anyone with any knowledge of the topic want to tell me?


    I guess the people who know the answer to my question are out riding, not posting snarky comments on the internet.

    Maybe I was not clear enough so I will give it another shot. I have read the post, and any others that a search can turn up, and was hoping someone might have more to add about running a rear rim up front , and what different tire sizes are available to me and how they might effect the ride.


    Is everybody to cool to help a n00b?
    #33
  14. WayneJ

    WayneJ City Slicker

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    :fpalm
    #34
  15. JustBob

    JustBob Uh...who me?

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    I suspect the reason few guys have replied is that few, if any, have considered putting an 18" on the front. It doesn't make sense for a dirt bike. 21" hoops roll over obstacles better and there is a wide variety of profiles available for them. The BMW R1200GS has a 19" front and poses as a dirt bike (well...weight is a real consideration) and the Multistrada 1200 (which I just sold) has a 17 and dirt pretense as well by adjusting suspension and power on the fly. Both fall short. I personally haven't considered an 18 on the front because it sounds like a dumb idea to me. If intuitive doesn't work for you, think about running a 17 on the front against a 21 and see which one you'd want off road. No comparison. Therefore, guys are not inclined to invent a treatise against the obvious.
    FWIW.
    Peace.
    #35
  16. bmwpowere36m3

    bmwpowere36m3 Adventurer

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    A larger front wheel will go over obstacles easier than a smaller one, but it comes down to really what kind of trail riding are you doing. There are plenty of DRZ400SM (17" wheels) riders who take their bike off-road, so it's not like it can't be done. If you plan on just riding fire-roads, gravel, or trails with few large obstacles I don't see the problem running a 17", 18", 19"... whatever.

    However I would only get a smaller wheel if I wanted to throw on a set of street-specific tires.
    #36
  17. Number6

    Number6 mad as hell

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    Thanks, and I suspect it is a lack of knowledge not that I am too n00bish to deserve help, but people who post to boost their post count and/or shit on people to make themselves feel cool draw my ire.

    So is the ability to roll over objects the only consideration, or would playing with the width create any predictable benefit? In my research I have read that the front is narrower than the rear on dirt bikes to give the front tire wiggle room in the ruts created by wider back tires. And that is why I was wondering what the tire size options are for the DRZ rear rim. All the posts I read are people trying to get the fattest rubber they can on it not the other extreme. So does anyone know what the narrowest tire you can put on a DRZ rear rim might be?
    #37
  18. JustBob

    JustBob Uh...who me?

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    Hey....yer digging in a dry well here. Why don't you try some stuff and come back with data rather than all these inane questions.
    Geese. Now you've got me flaming.
    Heck....I don't even have a DRZ anymore so maybe I will just unsub.
    #38
  19. bmwpowere36m3

    bmwpowere36m3 Adventurer

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    Yea, you need to do more research... but I was curious. So, the stock rear rim on the DRZ400S/E is a 2.15 x 18". So according to this: Dennis Kirk Tire Sizes you can run as narrow as a 90/X-18.

    However if you wanted to maintain the stock tire diameter ("height"), you would need to run a 90/120-18. I don't know why you'd want to run a much narrow tire than stock, but know that your tire choices will be increasingly limited.

    I would say a range of +/- 10 mm from the stock tire size (width) would be a reasonable range when looking for tires. I would be more interested in selecting a tire I want and then seeing what they offer for sizes.
    #39
  20. KDXfile

    KDXfile Been here awhile

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    Your bike may not handle optimal with the wheels you have but if you insist on running 18" wheels F/R, I would prob run 1 size narrower on the front or the same size like you have now. But that's just my opinion.
    #40