[xlankex]

So I see all of these epic builds with sweet looking tires but I can't seem to find any anywhere. I'm looking all over the place and having a hard time finding vintage style treads similar to this. Anyone have a tire resource or is there an equivalent in modern tire sizing that I can look for akin to a 3.5-18 and 3.75-18. Please post links below.

 

[Herb591]

IIRC, that tread was more specific to 16" tires. Typically on Harley's. Metric twins more commonly had Dunlop K70's.

 

[83XLX]

Google Duro tires. They have all sorts of vintage tread patterns to choose from, and they are inexpensive. I have a pair on my 350 and have been happy with them.

 

[CarolinaBoy]

So I see all of these epic builds with sweet looking tires but I can't seem to find any anywhere. I'm looking all over the place and having a hard time finding vintage style treads similar to this. Anyone have a tire resource or is there an equivalent in modern tire sizing that I can look for akin to a 3.5-18 and 3.75-18. Please post links below. View attachment 210025

You can find these at cokertire.com
Also, the Shinko 240 and 270 are available in similar sizes.
Also, the Avon Safety Mileage. They are out there.
Dunlop, IRC, and Duro also make vintage style tires.

 

[jd50i]

Dunlop for me

 

[Old Okie]

Which Dunlops, are they tube type??? Where did you find them, cost???

 

[76TWIN]

Looks like Dunlop K70 to me.

https://www.ebay.com/itm/Dunlop-K70...B750-Tires-Tubes-and-Rim-Strips-/172715437290
https://www.denniskirk.com/dunlop/k70-tire.pfp6510.prdf

 

[jd50i]

I got mine from motorcyclesuperstore.com. Yes they are tubed.

Dunlop K70 Front Tire
Color- --, Size- 3.25-19
SKU# 193327
$74

Dunlop K70 Rear Tire
Color- --, Size- 4.00S-18
SKU#193330
$79

 

[Old Okie]

I will be ordering soon. Thanks for the info.

 

[Old Okie]

I hate to drag this thread back into the light but I have questions. Talking about a 1979 CB400T II.
The wheels are, front 1.85X19, the rear is 1.85X18. The original tire sizes were 3.60X19 and 4.10X18.
Currently on the bike are 15 year old 3.25X19 and 4.25X18. I would like to have tires that are nearly as
to the original size. Still looking at Dunlop K70 and maybe an 80/20 dual sport tire. Has anyone sorted out
all this info regarding tire sizes?? What are my options in tire sizes that are OK with the wheels as far as tire sizes??
Trying to stay near original sizes.

 

[Herb591]

Your rims sound narrow for the tire sizes your running. Especially the rear. The front is border line. https://thisiscasperslife.files.wordpress.com/2013/12/motorcycle_rim_width_tire_size_chart.pdf

 

[longdistancerider]

Correct rims and tire sizing per Honda. The 3.60 and 4.10 sizes seem to be troublesome to find, I'd go with the 3.50 and 4.00 which are basically 1/10th of an inch narrower or you can go with metric front 90/90 and rear 110/90

 

[Old Okie]

The reason for my concern is the wheel size, 1.85 does not seem right for a 400 tire.
On the bike now is a 3.25 and a 4.25. The front looks OK but the rear does not.
Would some one with a 1979 CB400T II please check the wheel sizes before I order these tires.
A 350 and a 400 Dunlop K70 are available if that will work. The parts fiche shown 2 part number
for the wheels for this bike but there are no details. The official Honda manual is no help either.

 

[longdistancerider]

The FSM calls for a 3.60 S 19 and a 4.10 S 18
3.60 x 26mm = 93.9mm so a 90/90/19 front
4.10 x 26mm = 106.6mm so a 100 or a 110/90/18 rear

 

[Herb591]

They may be the correct tire sizing per Honda but not the tire manufacturers. I would bow to the tire manufacturers on this subject. The 1.85 rim is more compatible with a 3.00 tire. Dunlop recommends a 2.15 rim on both tire sizes. https://www.dunlopmotorcycletires.com/tire-line/k70/

 

[fox_warren]

Vintage Motorcycle Tires - Heidenau Tires

 

[cfile]

Per the rim charts, 1.85 inch rims work for 90mm, 3.25", 3.50", 3.60" and 4.10", the latter two being a low profile tire. Also, MJ and ML size. I've seen at least one chart that also included a 100mm tire, but no tire manufacturers that list that rim for that tire. 3.75" and 4.00" call for at least a 2.15 as do the 100mm's on most charts. Lots of folks are apparently running the 100mm's on those rims and I am trying to decide if I will bite the bullet and do so myself, since the 90mm options are limited and will likely require me to mismatch brands or styles that offer a 120/90/16 which is my substitute for the 4.60 x16, another low profile tire well suited to the cruisers of the day.

 

[oupa]

You want vintage style tires? They'll be at Oley, PA this weekend. They're probably there now.
https://www.cokertire.com/tires/styles/motorcycle-bike.html

 

[Cal]

Per the rim charts, 1.85 inch rims work for 90mm, 3.25", 3.50", 3.60" and 4.10", the latter two being a low profile tire. Also, MJ and ML size. I've seen at least one chart that also included a 100mm tire, but no tire manufacturers that list that rim for that tire. 3.75" and 4.00" call for at least a 2.15 as do the 100mm's on most charts. Lots of folks are apparently running the 100mm's on those rims and I am trying to decide if I will bite the bullet and do so myself, since the 90mm options are limited and will likely require me to mismatch brands or styles that offer a 120/90/16 which is my substitute for the 4.60 x16, another low profile tire well suited to the cruisers of the day.

If I'm reading this right, a 4.00 tire requires a LARGER rim than a 4.10 tire?? I'm confused

 

[longdistancerider]

Yes, it is confusing at best. Tires have evolved over the years quite a bit. I just go with the Honda spec sizing