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SuzukiSavage.com
/cgi-bin/YaBB.pl General Category >> Rubber Side Down! >> New tire, big difference! /cgi-bin/YaBB.pl?num=1426400347 Message started by zipidachimp on 03/14/15 at 23:19:07 |
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Title: New tire, big difference! Post by zipidachimp on 03/14/15 at 23:19:07 Just replaced an IRC 140/80-15 dated 4607, 27 lbs with wheel for a Kenda Challenger, 140/90-15 dated 4614, 33 lbs. Diameter changed from 23 3/4" to 24 3/4". Visually, the new tire is hugely bigger, and way heavier. Be interesting to feel the difference on the road. 8-). Also, the profile is more triangular. |
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Title: Re: New tire, big difference! Post by mongo on 03/15/15 at 06:43:23 Does the 140/90 15 fit a stock bike, with no modifications? Seems to be some discussion whether or not these do fit. I am needing a new rear tire, like the idea of a larger rear, i don't feel like having to modify anything "major" to get it to fit. Changing fender bolts i don't consider major, but having to cut the swing arm is not something that i feel like doing. :) |
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Title: Re: New tire, big difference! Post by Art Webb on 03/15/15 at 07:41:01 Mongo, a 140/90 will fit any stock Savage / S40, no mods needed beyond maybe button head fender bolts the threads you are seeing where swingarm mods are necessary are people going larger than that, such as cafe builds that re replacing the 15 inch rear wheel with a 18' rear wheeel, not to mount a 140/90 |
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Title: Re: New tire, big difference! Post by mongo on 03/15/15 at 07:46:52 Thank you, that is what I needed to know. |
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Title: Re: New tire, big difference! Post by Serowbot on 03/15/15 at 08:56:12 Be careful for the first 50 miles or so... until the mold release wears off the tire... They can be pretty slicky... I usually tie a bandana to the handlebars to remind me as I ride...8-)... |
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Title: Re: New tire, big difference! Post by hotprops on 03/15/15 at 08:56:51 would like to know how to read the date code? |
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Title: Re: New tire, big difference! Post by Serowbot on 03/15/15 at 08:59:26 All tires sold in the USA have a DOT number on the side wall. At the end of the DOT number is a 4 digit date code with the first two digits indicating the week and the last two the year the tire was manufactured. Tires built before the year 2000 used a 3 digit date code with the first two digits indicating the week and the last digit the year of manufacture. Shown is the 27th week of 2003...(2703)... http://i600.photobucket.com/albums/tt82/serowbot/5d1363550984-motorcycle-tyre-tire-m_zps17cf96f2.jpg PS.. added this info to the Tech Section... - Serow 8-)... |
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Title: Re: New tire, big difference! Post by MnSpring on 03/15/15 at 11:35:13 Well I went the other way, a 130/90/15 (MT-66). No Modes at all were necessary. and the Spedo, reads a little closed to a GPS. What I found on, in researching. The Aspect, '90', part, no problem, in fact I think it was better. It was the Width, '140' part, that may, or may not, need button head bolts on inside of fender. Found out, even though a tire, 'says', 140, each brand/style, are Different. |
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Title: Re: New tire, big difference! Post by zipidachimp on 03/15/15 at 11:51:25 Not very happy with the extra 6 lbs of unsprung weight. Too late now. The 130/90-15 may be the 'smart choice' in future. Will check it out. here: http://www.tacomaworld.com/forum/tirecalc.php?tires=170-80r15-140-90r15 If I can switch my new tire onto my shadow vt600, I will go for the 130/90-15 on my S40 Mnsprg: any idea of weight of the 130? 8-) |
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Title: Re: New tire, big difference! Post by MnSpring on 03/15/15 at 13:59:51 Quote:
Don't have the fist clue. Perhaps the Pirelli Web site, would list those specks. Ah HA, The Kirk web site says: 11.93 lbs They were Pirelli, MT-66's, from Dennis Kirk. https://www.denniskirk.com/pirelli/rear-mt66-route-130-90s-15-blackwall-tire.p540497.prd/540497.sku |
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Title: Re: New tire, big difference! Post by Art Webb on 03/15/15 at 21:51:43 130/90 is plenty of tire for a savage, hell, my 600lb 95 horse XS 1100 has a 130/90, and that's stock most all cruisers are over - tired in the rear, for the look |
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Title: Re: New tire, big difference! Post by zipidachimp on 03/15/15 at 21:52:31 Sorry, but I meant the weight of the tire and wheel together. I've committed the cardinal sin of 'adding' to unsprung weight, rather than reducing it, and by 6 lbs! I'll address this issue later after the bike is back together. darn! >:( |
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Title: Re: New tire, big difference! Post by Art Webb on 03/15/15 at 21:56:29 you will adjust pretty quickly to it, I don't even notice the difference anymore still, I will go down next time to the 130 / 90, for the better handling I too am curious now re weight differential what tire did you get? |
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Title: Re: New tire, big difference! Post by Serowbot on 03/15/15 at 22:31:23 It's all about balance... (love that catch all phrase)... Miles, vs time, vs weight... It's all about choosing the right tire for you... Just don't let your tires grow old from neglect... 8-).... |
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Title: Re: New tire, big difference! Post by justin_o_guy2 on 03/15/15 at 22:38:21 25% increase,, less actually. ,,,, strap ten pounds on the seat. |
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Title: Re: New tire, big difference! Post by Dave on 03/16/15 at 03:44:43 Here is a rim width chart for motorcycle tires. The rear rim is 2.75 inches wide. The stock 140/80 and replacement 140/90 tires are acceptable on the stock rim - but are really the correct size on a 3.50 rim....so the beads are squeezed in 3/4" more than is desirable. The 130/90 tire is actually a better fit of the rim on our bike, and most likely will handle better. http://www.mtsac.edu/~cliff/storage/gs/Motorcycle_Rim_Width_Tire_Size_Chart.pdf The extra weight will most likely affect your acceleration a bit. Not only do you have to accelerate the tire weight linearly down the road with you - you will also have to accelerate it rotationally. The extra weight increased the flywheel affect, and it will be harder to increase of decrease the speed a bit. Probably not a big deal....but I suspect you will feel it. |
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Title: Re: New tire, big difference! Post by jcstokes on 03/16/15 at 18:44:48 I've become interested in this discussion. At the moment I'm very happy with my Michelien Commander 140/90 15 rear and Michelein Pilot Activ front. When I replace what advantages are going to a 130/90 rear? I spoke to a tyre shop here and they seemed to think it would make the bike nimbler in handling. The 130/90 sold near me is a Kenda. |
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Title: Re: New tire, big difference! Post by zipidachimp on 03/16/15 at 23:30:12 My mistake was in ignoring the weight of the mounted tire. The original tire/wheel weighed 27lbs, the new Kenda 140/90 is 33 lbs. That's an extra 6 lbs below the springs. Any suspension/hotrodder/sportscar guru would cringe at adding unsprung weight. More weight means less HP to fling you down the road. Also, a fatter profile is less nimble around corners etc. I won't make this mistake again!!! >:( The only potential saving grace here is that the Kenda has a very obvious triangular profile, much like the old Dunlop 'triangulars' popular in Hailwood's/Agostini's day. Buy the 130/90! ps: norton commandos use a 100/90 rear! |
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Title: Re: New tire, big difference! Post by jcstokes on 03/17/15 at 00:15:38 I'll keep this in mind for when the Michelin wears out. |
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Title: Re: New tire, big difference! Post by Dave on 03/17/15 at 03:08:14 The large rear tires are a fashion statement on a Cruiser in some respect - however they might offer a bit better ride on a bike with limited suspension travel, the larger profile helps make the bike a bit more stable in a straight line, and the added rubber might help with tire mileage. We have become used to seeing the big rear tires on Cruisers.....and now if you mount a narrow tire for handling - it somehow looks just a bit too skinny. I am currently running 18" rims on my bike and I have a 90/90 on the front and a 110/80 on the rear....and it is plenty of tire for the weight and HP of the bike and is proper looking for the Cafe' style bike (it would look goofy on a cruiser). |
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Title: Re: New tire, big difference! Post by jcstokes on 03/17/15 at 18:21:14 Thank you Zipi and Dave, appearances don't concern me but an improvement in handling would, however, I value Dave's comments about straight line stability and comfort. All makes food for thought and also I would have to consider speedo accuracy. It will be some time before my rear tyre wears out. |
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Title: Re: New tire, big difference! Post by Art Webb on 03/17/15 at 18:34:28 by which time you will have adjusted to the 140 / 90 and you will be very pleased when you go the other way :D |
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