Shinko/Pirelli/Avon vs dual compound bias ply - suggestions?

Chuck78

Been Around the Block
So a few test pilots on the GS Resources forums have sold me on their conclusions on best gripping tires for the money. Avon AM26 RoadRiders were the preferred best gripping tire for a decent price (8,000-10,000mi on rear). Runner up was the cheaper, stickier, and high quality Shinko 230 TourMaster (4,400-5,500mi on rear). Pirelli Sport Demons came in 3rd, very high regards for their phenomenal grip, but cost as much as the Road riders yet have half the tread life same as the sticky Shinko.

One guy commented on the Shinko being phenomenal for the low price, great construction, profile, and 90% or better of the gripping capability of the Sport Demons.

Well I love corner burning through twisties, but am always broke, so I went with a 110/90-18 Shinko 230 front, and a 140/70-18 Shinko SR741 rear (same compound different aspect ratio and tread pattern). These tires on 2.50/3.50 DID rims was AWESOME.
The rear tire would get fairly flat treaded nearing 4000 miles though, but at $90 shipped, good deal for the amazing grip.

I picked up another set of wheels, 2.75 front and 3.50 rear. They had Avon RoadRider 110/90 and 150/70 tires with 100 miles on them. Wider tire, same rear rim width, maybe I lost a little bit of contact patch from the tire pinching in slightly more. This Avon is showing the same sidewall and tread cracking they were notorious for a few years ago, but not at all on the front. I have boosted the performance of my engine by 86cc's and more compression, but I really have to watch this thing getting on the throttle coming out of low to mid speed turns, as I have broken it loose quite unexpectedly MANY times since the swap in July. Not sure if it's the wider tire/same rim as 140 setup, the longer lasting compound on the Avon, or the tire being from an old batch obviously since they supposedly fixed the cracking problem 3+ years ago. Not so sold on the Avon, but the prospect of not flatteninh the rear tread center in 4000 miles was quite appealing.

Now... I am really searching for answers on whether a tyre exist in the higher-end selections that is a dual compound that will give me a fairly long life center section, but with a soft grip or a compound for leaning into corners. This would be for you awesome, and could extend my intervals for tire changes quite a bit while still giving me confidence-inspiring grip in corners like the Shinko or presumably the sports demons.

can anyone recommend a dual compound tire that is available in vintage bike sizes in a bias ply?otherwise I might try a slightly narrower Pirelli sport demonn/a 150. The Avon RoadRiders run a bit wider than most tires of the same advertised size, so maybe the Pirelli would be slightly less pinched in and give me better contact patch?

the bike looks very serious with the 150, whereas the 140 just looked pretty good. Much better than the stock 110 that looks quite anemic for a bike with such great high rpm power from the factory as a GS 750.
 
A lot of people have had good luck with Bridgestone BT45's. I like them, too. Use the tire manufactures guidelines of rim width to select the right width tire. This will yield a better handling bike. Wide tires don't necessarily work better on the wrong sized rim. But, if you are after looks alone... that's your bag, and that's cool too.
 
After reading lots of rider feedback, here is my rundown of bias ply tires available in vintage bike sizes - 18" & some 19" fronts (as well as some 16"&17" availability):

Mileage and good grip:
$$$ Avon AM26 RoadRider good grip (7000-8000mi)
$ Shinko 712 good grip for the money, Avon is better at deep lean angles (8500mi)

Ultimate Grip:
$$$ Pirelli Sport Demons (4400mi?)
$$ Shinko 230 TourMaster & SR741 (wider rears in 70 series) (4000-4300mi)
$$$$ Continental Attack (less than 4000mi)

Great Grip, slightly longer life that the Ultimate Grippers, but not by much:
$$$ Bridgestone BT45 & BT45V BattleAxe (5000mi) (side by side comparisons say the Pirelli wins handling hands down over the bt45, but the BT45 gets great reviews none the less.

Isnt there a Continental Go or something that was highly regarded?

Excluded are Metzelers, Kenda's, Dunlops (the D404 was a phenomenal tire 25 years ago), Michelin, and IRC due to rider input that the above more modern designs are far superior
 
The BT45 is a dual compound rear, but still doesn't have the treadwear life of the RoadRider or Shinko 712. I would like to see the RoadRider and BattleAxe compared side by side, as well as the Shinko 230/SR741 to the BT45 BattleAxe.
Shinko to Avon - Shinko handles/grips better, RoadRider gets better mileage obviously. Seems that the BT45 gives you about 800-1000 MI more than the Demons or Shinko 230/sr741, and close to the same handling but not quite. The Shinko and Pirelli profiles are really excellent, hard to beat.
 
I'll vouch for the Pirelli Sport Demons. Had them on my CB750 for close to 4k miles, and they weren't worn hardly at all. Still gripped like glue. Then again, I wasn't "corner burning", just riding them on normal surface roads with a few trips to twisty mountain stretches here and there. chicken strips were a nominal 1/2" or so front and rear. I wasn't too worried about dragging knees on city streets lol. But they are a bit pricey ($220 shipped when I bought them) Worth the money in my opinion though.
 
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