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/cgi-bin/YaBB.pl General Category >> Rubber Side Down! >> Dunlop D404 140/90-15 Clearance.... /cgi-bin/YaBB.pl?num=1219531352 Message started by Squid Boy on 08/23/08 at 15:42:32 |
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Title: Dunlop D404 140/90-15 Clearance.... Post by Squid Boy on 08/23/08 at 15:42:32 Hey gang, Just got some D404's put on the Fire Lizard based on what I've read here. The rear tire is a bit beefier than the stock IRC, so I was wondering if I should harden up the rear suspension to allow for tire clearance underneath the fender. The top of the tire is pretty close to some bolts back there (I'm guessing more so when I'm on the bike), and I was wondering if that was anything to worry about. I'm 5'10" and 205 lbs. Thanks. |
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Title: Re: Dunlop D404 140/90-15 Clearance.... Post by YonuhAdisi on 08/23/08 at 17:02:48 464053415A4B4143475B56320 wrote:
Seems we may have a slight problem here ;) I also named my bike the FireLizard may cause some confusion. ;) ;) Oh well. :) |
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Title: Re: Dunlop D404 140/90-15 Clearance.... Post by Larisa on 08/23/08 at 17:11:57 Yes, You may end up ripping up your back tire if it drags along the bolts, which it most likely will. You can adjust the suspension but I don't know if it will really solve the problem. I have heard that you could consider grinding down the underside bolts to give more clearence or replace them with mushroom bolts. I'm in the same boat with mine (from the saddlebag additions that have rubbed against my 140/90-15, my suspension is already high and I'm only 5'6 130lbs) so I'll let you know if I find out any other good ideas. :) |
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Title: Re: Dunlop D404 140/90-15 Clearance.... Post by strangeling on 08/23/08 at 18:19:54 Actually I gotta say I was confused about the use of the Firelizard. I thought Yonuh changed his screen name for a minute. :o |
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Title: Re: Dunlop D404 140/90-15 Clearance.... Post by stumusic on 08/23/08 at 22:01:43 I just had a Metzeler 140/90/15 put on the back of my bike at the local shop and the guys there seemed to think there was plenty of clearance. The shop where I bought the tire (not the same as the installer) was confident that moving up a size would be fine as well. My rear shocks are set on the hardest setting and I don't have any bags or other accessories mounted. I'm 5'8" 145lbs. I gotta say though, that when I reached under the fender to feel what kind of clearance there was, I was a bit concerned. If I put fingers between the bolts and the tire and really bounce hard on the seat I get pressure against my fingers, but not really a pinch. Hitting a bump at speed however may compress the shocks significantly more... So far I've done about 50 miles on the new tire and not noticed any trouble. I'd love to hear what others have experienced with a 140/90/15 instead of the 140/80. |
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Title: Re: Dunlop D404 140/90-15 Clearance.... Post by stumusic on 08/23/08 at 22:03:05 Oh... I forgot to ask... What's a mushroom bolt? Sound like an easy fix compared to grinding. |
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Title: Re: Dunlop D404 140/90-15 Clearance.... Post by verslagen1 on 08/23/08 at 22:22:14 The technical term is truss head or round head. Truss heads are lower in profile. |
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Title: Re: Dunlop D404 140/90-15 Clearance.... Post by grandpa on 08/23/08 at 22:27:19 I have the 11.5 " heavy duty progressive shocks at the lowest setting. I am 6 ft and 260. Withe 140/90/15s the rear saddlebag bracket bolt just kissed the edge of the tire. I took the bags off until this week end. I just ground the bolt haed down as far as I felt comfortable that I could still get a little pressure with a wrench to snug it up. Use locktite and it doesn't have to be real tite. Looks like a lot more clearance. Didn't commute today on the bike due to a bad sinus infection. Will ops check it tomorrow and update. I love the difference it made on the ride that I went ahead and swapped the front tire to the next size bigger. Major difference on the freeway which is most of my commute. |
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Title: Re: Dunlop D404 140/90-15 Clearance.... Post by justin_o_guy2 on 08/24/08 at 06:24:09 All dressed up for riding I weigh about 140 & the Dunlop shows no sign of contact with anything other than road. |
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Title: Re: Dunlop D404 140/90-15 Clearance.... Post by Squid Boy on 08/24/08 at 09:12:33 First off, my apologies to Yonah for apparently using his bike name as a name in general for all of our bikes.....I just thought that name was entirely appropriate for our bikes! :) Now back to the question at hand. Has anyone ever replaced the stock bolts on the rear fender using Alan or hex truss/round head bolts? They might come out of the end of the fairings that hold the rear tail lights and not look so pretty, but if it will help with tire clearance than looks can take a distant back seat to function. Has anyone attempted to cut off the saddlebag supports at the top to make them flush and JB Welding the top of the supports directly to the bottom of the tail light fairings? Again, might not look pretty, but it should take care of any possible tire rubbing...and the saddlebags would be covering it, so who would care. |
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Title: Re: Dunlop D404 140/90-15 Clearance.... Post by Squid Boy on 08/24/08 at 17:23:04 OK, so here's my solution. Went to Home Depot and bought some 5/16"x2" Hex bolts and removed the three stock bolts that were in the fairing. With the new bolts in, it looks like I added an additional 1/8" of clearance, and now there's plenty of room...even for when the tire expands because of the heat. It was a pain in the rear to put the bolts back in with rear tire still there (and I don't have a bike stand), but I got it done. Oh, and I didn't put the third bolt back in, and the fairing still feels nice and tight. Now, to figure out how to put on saddlebag supports..... :D |
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Title: Re: Dunlop D404 140/90-15 Clearance.... Post by verslagen1 on 08/24/08 at 18:14:47 Put them on the outside of the fender, but under neath the supports. |
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Title: Re: Dunlop D404 140/90-15 Clearance.... Post by Squid Boy on 08/25/08 at 18:11:50 Do you mean bolting them on the outside of the fender, or cutting the tops of the supports off and JB welding them to the supports? |
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Title: Re: Dunlop D404 140/90-15 Clearance.... Post by skrapiron on 08/26/08 at 05:39:00 I replaced the hex-head bolts with a set of stainless steel truss head ones. Home Despot and Lewds don't carry them. I had to go to a specialty fastener supplier. With the wider tire, you will need all the clearance you can get. It is not only wider, but taller as well. The tire MUST be centered as best you can get it and if you are a bigger rider, you will have to turn the preload up on the shocks to keep from bottoming out. |
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Title: Re: Dunlop D404 140/90-15 Clearance.... Post by stumusic on 08/26/08 at 06:44:10 Take a look at this: http://www.hogantire.com/tctiresize.htm As I understand tire sizes, a 140/90/15 should not be any wider than a 140/80/15. Both are 140mm wide. The /90 is 126mm tall (.9x140) while the /80 is 112mm tall (.8x140.) The /90 is 14mm, just over 1/2 an inch, taller. 1in=25.4mm. Also, these are cross sectional numbers so the /90 will reduce the clearance under the fender by 14mm but raise the height of the rear end overall by 28mm unloaded. I would expect the taller tire may spread a bit more under load but I'd guess this could be compensated for with a bit more air pressure. |
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Title: Re: Dunlop D404 140/90-15 Clearance.... Post by stumusic on 08/26/08 at 21:41:20 ... OK, so I don't know what I was thinking in my last post... the overall height is only increased by 14mm not 28 since the frame is mounted to the hub not the top of the tire... Only the top of the tire is 28mm higher in relation to the ground... :exclamation |
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