CB175 Tire Options

DSHEP

DSHEP

Been Around the Block
I think it's time to replace the 38 year old tires on my CB175 with a modern set. Couple questions for you guys...


I've done some searching and forum digging on the modern tire options for the CB175 18" Front and Rear and have come up with a few options but mostly varying opinions.


I would like to replace the tires with the same sizes. Based on conversion charts I've gathered that the front is 80/90 and the rear a 90/90 (Front 2.75-18 = 80/90-18, Rear [/size]3.00-18 = 90/90-18)


Firstly, Do you folks have any good sources for tires this small? I've seen a lot of UK based vendors but would prefer stateside shipping.


Also what are your experiences with Avon's? Metzeler's? Cheng Shin? I would like a modern performing and looking tire. DOT approval isn't the biggest concern but $200 per tire is.


Thanks for reading!
 
Bridgestone battle ax... They are non DOT but carry a honda part #. Super sticky. And Skinnnnnnnny. By far the highest performance tire you'll find for that bike. You'll have to sweep the tires before you bring it in the garage they are so sticky.

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Nice. Is that your bike? Are those the same size front/rear? Two fronts or a front and rear? Do you happen to have the honda part number?
 
It was a bike I built. I sold it a couple yrs ago. There is a build thread on here some where. Same tire front and rear. I think they are 80/90's. Cant remember.... cant remember whee I got the part # either. it may have been from my local dealership. They were cheap too. Like $80 each if I remember right...?

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Let me know if you can get them and how much they are, I need a front for my 1970 cb175. I might call my local shop with that part # and see whats up!
 
That is a soft race tire made for the Dream 50. It's a "production race" compound and is very popular with CB160 racers.
 
Just an update. These can be ordered from any Honda dealer and probably most motorcycle shops.



I don't have any immediate track plans so I went with some 80/90-18 IRC NR53's which are $30 each instead of $100+ each for the race tires.


I'll let you know how they work out.
 
Oh, the 80/90-18 IRC NR53's are moped tires, how are those working out for ya.

My front tire wasn't looking so good from age, so I started researching a new tire, and what do ya know, my tire is now flat!

I'm strapped for cash right now too, so I think I'm gonna order a Michelin - Gazelle M62 tonight. Ill let you know how it turns out!
 
In metric sizes the first number is the width, the second number is the percentage of the width, and the third is the wheel diameter. Take a 100/90-18 tire for example: it is 100 millimeters wide. The height is 90% of the width, so .9 * 100 = 90. The conversion for mm to inches is 25.4.

100 divided by 25.4 = 3.937
90 divided by 25.4 = 3.54

So a 100/90-18 tire is almost 4 inches wide and about 3.5 inches tall. Moped tires use the older sizing which can be converted back to metric. A tire that measures 3.00*18 is actually 3" wide and 3" tall. So 3 multiplied by 25.4 is 76.2 millimeters. Instead of saying a tire is 3.00*18", the metric conversion would be 76.2/100-18" (remember the 100 is the percentage or aspect ratio).

Sorry if that's confusing too. Just remember the number 25.4 or use a chart that shows acceptable rim widths.
 
Big Rich said:
In metric sizes the first number is the width, the second number is the percentage of the width, and the third is the wheel diameter. Take a 100/90-18 tire for example: it is 100 millimeters wide. The height is 90% of the width, so .9 * 100 = 90. The conversion for mm to inches is 25.4.

100 divided by 25.4 = 3.937
90 divided by 25.4 = 3.54

So a 100/90-18 tire is almost 4 inches wide and about 3.5 inches tall. Moped tires use the older sizing which can be converted back to metric. A tire that measures 3.00*18 is actually 3" wide and 3" tall. So 3 multiplied by 25.4 is 76.2 millimeters. Instead of saying a tire is 3.00*18", the metric conversion would be 76.2/100-18" (remember the 100 is the percentage or aspect ratio).

Sorry if that's confusing too. Just remember the number 25.4 or use a chart that shows acceptable rim widths.
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