| Author | Message | ||
     Billetmetallic |
Recommended tire size is 170/60zr17 for an S1, anyone run a 180/55zr17 tire on their S1? would it be ill advised to do so? | ||
| Impala |
The same is recommended on the X1 and when I bought new tires I switched to the 180. 180 seems to be a good size for these bikes. I have been told a 190 will fit but I didn't think it was necessary. | ||
| Pizzaboy |
i just put a 180 on my bike today.... and love it i have the marchesini rims on a S2 you can be SURE that it will fit and you will like the fitment! | ||
| 99cyclone |
If you have PM wheels, you're safe with a 180. They're wider than the standard cast wheels. 180's aren't recommended for the cast wheels, but many folks have run them with no problems. | ||
| Reducati |
i have 180s on my 96 s1, no problem. | ||
| Cyclonemduece |
i run em on a cast rim, no problem here | ||
| 80rs427 |
I've got a 180 Dunlop on the back of my '98 S1 with a marchesini wheel. I can't tell much difference between it and a 170. | ||
| Buell82 |
When you really compare the size diff between a 180 and 170 its about the width of your pinky. Why pay more for that? I just stuck with the recomended size for my S3. | ||
| Pizzaboy |
did it cost more for a 180?? tireexpress.com sells their michelin pilot power package for either a 170 or 180 rear for the same exact price?? and even if not are you saying you should save your..... $10 difference between the two?? i like the fact that it looks a little more 'filled in'. i realize my S2 is 13 years old, but that doesnt mean that it needs to have the dorky looking narrow rear tires of the mid 90's. fat rear tires look a lot better | ||
| Ratbuell |
Given that most sportbikes come with 180s these days, I've found that they're actually cheaper than many 170s...170 seems to be turning into more of an "oddball" size. That said, I run a 180 on my S2 with Marchesinis. Looks about the same profile as the 170/cast wheel on my S1W...but WAAAY narrower than the 180 on my Uly. 170/180 handling on the tuber seems just about the same to me. | ||
| Jstfrfun |
Just remember, the height to width ratio aspect is the numbers your looking at, and there value is metric. So 10mm is not that much different. First rule is " If it feels good do it ". If your handling is not ill efected then all's good. | ||
| Kyrocket |
That's the same size my X1 calls for but (and I know all that "factory engineers wanted it that way" crap) but I run a 190 on the rear just for the simple fact that it feels more "planted" to me in the curves. I went from 170 to 180 then to 190 and by the stealerships mistake back to 180 and suffered a few thousand miles because of it. I just put new Metzelers on this winter and getting them broken in now. | ||
| Djkaplan |
If you want ultimate performance from your tires, it's best to use the size recommended for the rim width you have. A too narrow rim width can compromise the tires sectional profile. | ||
| Djkaplan |
Take from it what you will... this link explains it pretty clearly. http://www.sportrider.com/tech/tires/146_0206_tire _size/index.html Always be aware that the engineers that recommend the best tire size for a given wheel width know a LOT more than you probably do and have your best interests in mind when you use their products. I tried a Dunlop 207 180/55 on my 5" wide three spoke rear wheel and found no benefit, performance or otherwise. | ||
| Werewulf |
i second that! | ||
| Kyrocket |
I agree with all that and know there are much smarter people than I. I don't knock any of that information. I was simply saying that the 180 will fit, it may not be designed to be on there but question was could he run one and yes, yes you can. For my riding style and speed the 190 just feels more comfortable and I will probably run this size until I have something happen that can be contributed to tire size. No offense meant to anyone. It would really be hard for me to care any less what tire size someone has on, as long as your knees are in the breeze right? | ||
| Billetmetallic |
djkaplan, you say you found no benefit in running that rear tire size, but did you find any adverse effects? | ||
| Skntpig |
If you have an two inches or more of unused tread on the sides of your tire, (chicken strips) please disregard this post. You can use any tire from 160-190, why not go big! I have the PMs so it's a 5.5 inch wheel. The March is a 5 inch. I have ran a 160, 170 and 180. A 190 will fit I wouldn't run it because of the handling issues associated. A 190 is Very close to the belt. I went to a chain after 2 broken belts. I bought my bike for corners not straights and mostly run race compound take-offs. The 160 feels very stable on the street where you aren't at very severe lean angles because it is flatter. You can still drag the pegs, shifter and kickstand. You have more contact patch when leaned over, the arch or round part isn't as sharp. Turn in is gradual and you can get on the gas earlier coming out of a corner, on the street. It also makes the steering geometry more tame. Most of you won't choose this because it isn't the "Macho tire size". The unsprung weight will show up on the dyno. This is the fastest tire for the street. The 170 fits best and feels great all over, but is getting harder to find. The engineers were right. I have a 180 take-off on there now and it has less side grip of them all. It is more mushroomed out and taller. This makes the rear of the bike higher and less stable on the gas while still leaned. You will never use all of the side of this tire. Trail braking into corners with the front is also reduced due to the change. Hope this helps. Sometimes a lighter smaller tire is better. | ||
| Djkaplan |
"you say you found no benefit in running that rear tire size, but did you find any adverse effects?" I'm not going to blame it on the tires, but I did have two lowsides and one highside with the 180/55 Dunlop 207 I ran on my 5" wheel. Two of the the incidents were cold weather related (the Dunlop curse it seems) but stupidity was involved in all of them. It was the first tire I put on my brand new bike (after the original 170/60 was worn) and I thought I was doing something good by going bigger... but I was still at the stage where I finding the bike's limits (learning how to properly ride it actually). Not so sure I could absolutely rule out the tires, but the 'squeezed in' profile caused by the too narrow rim seemed like it made the contact patch smaller at extreme lean angles and I could never reach the last 3/8" of tread on each side (the chicken strips everyone talks about). It also seemed like the tire had a more 'peaked' profile because of the squeezed in carcass and flat spotted faster. When I put a 170 back on the 5" rim, it let me use all the tread on both sides. Modern tires are designed to put more tread on the ground when the bike is leaned over; if you use a rim that's too narrow, you'll be creating variables that the tire wasn't designed for. But if you like the look and maximum cornering ability isn't your prime concern, put on any size tire you please. | ||
| Cyclonemduece |
im going to put a 250 chopper tire on mine next |
