{"id":19239,"date":"2023-05-31T08:00:00","date_gmt":"2023-05-30T23:00:00","guid":{"rendered":"https:\/\/www.decoboco.info\/en\/?p=19239"},"modified":"2026-09-24T13:46:12","modified_gmt":"2026-09-24T04:46:12","slug":"zephyr550-400-tire-type-dilemma","status":"publish","type":"post","link":"https:\/\/www.decoboco.info\/en\/20230531\/decoboco-cars\/zephyr550zr550\/zephyr550-400-tire-type-dilemma","title":{"rendered":"ZEPHYR550\/400 Pondering tire types (*\u00b4\u03c9`*)"},"content":{"rendered":"\n
\"\"<\/figure>\n\n\n\n
<\/div>\n\n\n\n

Unusually for bikes I’ve owned before,
the front is 17 inches and rear is 18 inches. <\/strong>

I initially considered going with 18 inches up front too, but that seemed wasteful.
You can only experience the stock character while it’s stock (*\u00b4\u03c9`*) <\/strong>

I want to choose tires based on the wheel size. <\/p>\n\n\n\n

<\/div>\n\n\n\n\n\n\n\n
<\/div>\n\n\n\n

First, let’s check the tire and wheel sizes for the Zephyr 550\/400.

<\/p>\n\n\n\n

Front wheel 2.50-17, tire 110\/80-17
Rear wheel 3.50-18, tire 140\/70-18 <\/h2>\n\n\n\n

These are quite narrow tires, so the handling should be light and fun \u266a
For city riding, aside from tire size options,
I think thinner tires are more enjoyable. <\/p>\n\n\n\n

<\/div>\n\n\n\n

Next, let’s understand the numbers from tire sizes <\/h2>\n\n\n\n

I’ll reference the BT46.
<\/p>\n\n\n\n

110\/80-17 M\/C 57V TL <\/td>2.50 <\/td>2.15\uff5e3.00
Recommended rim <\/td>		609 outer diameter <\/td>110 width <\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
140\/70-18 M\/C 67V TL <\/td>4.00 <\/td>3.50\uff5e4.50
Recommended rim <\/td>		657 outer diameter <\/td>143 width <\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Here I’m mainly paying attention to the “recommended rim size” <\/strong>and the “outer diameter.” <\/strong>

Not just the stock tire size, but
the “recommended rim” <\/strong>and the “tire size” <\/strong>that goes with it.

Of course, the outer diameter is also very important, so pay attention to that. <\/p>\n\n\n\n

<\/div>\n\n\n\n

The 2.50-17 front tire has plenty of options, <\/h2>\n\n\n\n

The rear is a bit problematic.

For a rim width of 3.50,
“140\/70-18 uses a standard rim of 4.00,” <\/strong>so
the tire shape is slightly deflated.

“A wider tire on a slightly narrower rim” <\/strong>
causes the edge to roll in a bit.
*No issues within tolerance.
“130 size is also a viable option” <\/strong>in terms of sizing. <\/p>\n\n\n\n

<\/div>\n\n\n\n

“140\/70-18 has an outer diameter of 657” <\/strong>
I’d prefer not to change the bike’s stance too much <\/strong><\/h2>\n\n\n\n
130\/70-18 M\/C 63H TL <\/td>3.50 <\/td>3.00\uff5e4.00 <\/td>644 outer diameter <\/td>135 width <\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

If I were to choose the BT46’s 130\/70-18, the outer diameter would be -13MM. Half of that means the rear drops -6.5MM.


A -6.5MM change is like
“tires that have worn down quite a bit” <\/strong>or “underinflated tires.” <\/strong>


As tires wear, the change becomes more pronounced, so I’ll exclude options that lower the stance. <\/strong>
*Reversing the eccentric might be an option too…

130\/80-18 <\/strong>sounds interesting, but… <\/p>\n\n\n\n

130\/80-18 M\/C 66V TL <\/td>3.00 <\/td>2.50\uff5e3.50 <\/td>665 outer diameter <\/td>128 width <\/td><\/tr><\/tbody><\/table>
BT46 reference <\/figcaption><\/figure>\n\n\n\n

I’m struggling with the limited options for this 130\/80-18 size.

The Conti RoadAttack 3 matches front and rear, <\/a>
but I’m hesitant about availability and price.

Maybe this deliberation is the most fun part? <\/p>\n\n\n\n

<\/div>\n\n\n\n



<\/p>\n\n\n\n

(*\u00b4\u03c9`*) In the end, METZ Z8M INTERACT <\/h2>\n\n\n\n
<\/div>\n\n\n\n



<\/p>\n\n\n\n


<\/p>\n\n\n\t\t

\n\t\t\t\t\t\t\t
\n\t\t\t\t\t\n\t\t\t\t\t\t\"\"\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\n\t\t\t\t\t\tMetzeler Motorcycle ROADTEC Z8 INTERACT Front 110\/70 ZR 17 M\/C 54W TL (M) Tubeless 2491300 Motorcycle Tire Metzeler\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\n\t\t\t\t\t\t\t\t\t
METZELER(\u30e1\u30c3\u30c4\u30e9\u30fc)<\/div>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\u00a514,230\t\t\t\t\t\t\uff082026\/09\/21 17:35\u6642\u70b9 | Amazon\u8abf\u3079\uff09<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\"\"\n\t\t\t\t\t\t\t\u53e3\u30b3\u30df\u3092\u898b\u308b<\/span>\n\t\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\tAmazon\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t<\/div>\n\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\tRakuten\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\tYahoo!\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\"\"\n\t\t\t\t\t\u30dd\u30c1\u30c3\u30d7<\/span>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\n\n\n
<\/div>\n\n\n\t\t
\n\t\t\t\t\t\t\t
\n\t\t\t\t\t\n\t\t\t\t\t\t\"\"\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\n\t\t\t\t\t\tMetzeler Motorcycle ROADTEC Z8 INTERACT Rear 140\/70 ZR 18 M\/C (67W) TL (M) Tubeless 2415800 Two-Wheel Motorcycle Tire Metzeler\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\n\t\t\t\t\t\t\t\t\t
METZELER(\u30e1\u30c3\u30c4\u30e9\u30fc)<\/div>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\u00a518,616\t\t\t\t\t\t\uff082026\/09\/21 17:35\u6642\u70b9 | Amazon\u8abf\u3079\uff09<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\"\"\n\t\t\t\t\t\t\t\u53e3\u30b3\u30df\u3092\u898b\u308b<\/span>\n\t\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\tAmazon\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t<\/div>\n\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\tRakuten\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\tYahoo!\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\"\"\n\t\t\t\t\t\u30dd\u30c1\u30c3\u30d7<\/span>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t","protected":false},"excerpt":{"rendered":"

Unusually for bikes I’ve owned before, the front is 17 inches and rear is 18 inches. I initially considered going with 18 inches up front too, but that seemed wasteful. You can only experience the stock character while it’s stock (*\u00b4\u03c9`*) I want to choose tires based on the wheel size.<\/p>\n","protected":false},"author":2,"featured_media":19238,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"pochipp_cv_data":"{\"fc103989\":{\"pv\":1146,\"imp\":767,\"clickedOther\":6,\"clickedRakuten\":2,\"clickedAmazon\":3,\"clickedYahoo\":1},\"f0bfbf0a\":{\"pv\":1146,\"imp\":711,\"clickedOther\":12,\"clickedAmazon\":5,\"clickedRakuten\":3,\"clickedYahoo\":2}}","swell_btn_cv_data":"","footnotes":""},"categories":[41],"tags":[610,607,601,623,612],"class_list":["post-19239","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-zephyr550zr550","tag-metzler","tag-zephyr-400","tag-zephyr-550","tag-zephyr400","tag-zephyr550"],"_links":{"self":[{"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/posts\/19239","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/comments?post=19239"}],"version-history":[{"count":0,"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/posts\/19239\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/media\/19238"}],"wp:attachment":[{"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/media?parent=19239"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/categories?post=19239"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/tags?post=19239"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}