Has anyone ever used the portawalls ??? As I’ve read online that the ends fray and even some will wrinkle or like start to lift from the tire itself

Anyone ever used em to say how they are or work pr anything about em ??

ThumperPaul wrote on Yesterday at 14:18:39:

Here's a picture that attempts to explain this issue.
https://www.reddit.com/media?url=https%3A%2F%2Fpreview.redd.it%2F45mm-tires-o...

Notice that the TALLER aspect ratio, with more sidewall material, can better adapt to a narrower rim width than can a lower aspect ratio.  This is reflected on the chart Dave posted.

We've had discussion of tire sizes and rim widths, but nobody has said what Rim Width the factory put on our Savages and S40s.  Can anybody state the factory rim sizes for the benefit of the group?  

https://youtu.be/NhqgtP_GOik?si=FJw2kKL5Q4YQs4WM

ThumperPaul wrote on Yesterday at 19:23:53:


There is more than one chart out there.  I would consult the manufacturer's recommendations for each SPECIFIC tire that I was considering.  Also, as just discussed rim width depends on sidewall height, so stating 180 - 190 presents an incomplete picture.

Each manufacturer decides, possibly for each product, exactly what dimensions the product will have.  Even numbers like width and diameter are only nominal.  Every size has its own mold.  Somebody might well find that a 150/80-15 fits on their bike, but somebody using another make/model of tire might find it won't fit on theirs.  

For example, as you can see on the last chart at this location, a Mettzler 880 in 180/70-15 can be mounted on a 4.75 - 5.5 wide rim, while the 180/70-R16 is supposed to be mounted to 5.0-6.0  
http://kawatriple.com/tire_rim.htm

The Tubed / Tubeless aspect is a whole different issue.  Tires for mounting on tubeless rims and the rims themselves, have different geometry at the point where the rubber meets the rim than do Tubed tires / rims.  Here's a picture that depicts differences in the two representative geometries.
https://cdn.wheel-size.com/filer_public/9e/2f/9e2fe841-b218-4106-a710-9ca1015602
97/tube-tubeless.jpg    But there are not just two different rim geometries either, there are various different geometries for steel vs. cast rims.  This can get quite complicated, and it seems that folks frequently ignore the letter of the law and test their luck with mix and match combinations.

A tire that shifts on the rim and tears off a valve stem, or one that shimmies off the rim under duress is a serious wake up call.  Personally, unless the bike will only be ridden on and off its trailer at the show venue, I'll stay with manufacturer's recommendations.

Any tire can be a white wall.  https://www.amazon.com/Anvil-White-Wall-Tire-Paint/dp/B0798VVCD3    It's 100% an appearance issue, not worth a lot of time and effort in my view, but if I was going to spend time and dollars, it would be in rebuilding my wheel with a 16" rim.  Sourcing 15" tires is a pain, regardless of width.

ThumperPaul wrote on Today at 06:42:04:

The chart that Dave posted looks generic, probably adapted from one or more manufacturer's charts.

You didn't tell us,
 What Kawasaki model you are talking about.
 What tire you want to talk about.

I see "Dunlop" on the tire in the image you posted, and you told us the size.
The Dunlop 160/60-17 I've linked to, calls for the recommended rim as being 4.50, with the alternate being 5.00   https://www.dunlopmotorcycletires.com/tire-line/sportmax-roadsmart-iv/

Other manufacturers presumably have manufactured their 160/60 to fit other rim widths, such that these alternatives biased the generic chart larger, and different rim diameters, even of the same manufacturer's tire design, might prefer different rim widths.  Dave's chart doesn't account for rim diameter.

I'd find myself another chart if I had a good reason to disagree with the one I was looking at.

And, I'd suggest a better question, overall, as well as for this forum, is why Suzuki chose to use a 2.75 wide rear rim for the Savage?

It appears to me that when Suzuki specified tire part number 65100-24B02 on the first bikes in 1986, it was an IRC "Grand Speed" GS-18 sized 140/80-15.
https://ircmoto.com/products/grand-high-speed-gs-18

IRC recommends that this tire will fit best on a MT3.50.   So, why did Suzuki build these machines with a rim that was two sizes smaller?

It seems odd that my Suzuki GZ250, which came from the factory with a 130/90-15, came with a 15- 3.00 rear rim.  Seems like this is the rim that Suzuki should have been putting on S40s.

I'm thinking to switch to a 130/90, or 140/90, something that will handle the narrow rim more gracefully.