[Z1-R Custom] Tire Change to Pirelli “Phantom Sportscomp RS”. Maximum High Grip for Classic 18-Inch Wheels

The wheel paint came back surprisingly quickly in about a month (*´ω`*)
Maybe outsourcing early is the way to go?

As we head into Golden Week, the excitement season is upon us.
Everyone ready to loosen those purse strings?
Let’s get to work smoothly then.

Z1-R Custom Log

Vehicle: Kawasaki Z1-R

Parts: Pirelli Phantom Sportscomp RS (Pirelli Phantom Sportscomp RS)

Size: Front: 110/80-18 / Rear: 150/70-18

Selection Reason:

  • A classic tread pattern that preserves the silhouette of the Z1-R and retains the character of the era.
  • Overwhelming grip performance unique to the “RS” model to win in modern classic racing.

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Pirelli Phantom Sportscomp

I’m really happy about the 150/70-18.
Recently, the rear has been trending toward 4.5 with 160, right?

Back in the day, 4.00 was the basic size, I think. My GS1000S is also 4.00.
For classic 18-inch bikes, I still prefer around 3.50 for fun riding (*´ω`*)

[Service Data] Pirelli Phantom Sportscomp Actual Measurements of “Tire Width and Weight”. Measured 110/80-18 and 150/70-18

JB Magtan repainted. Practically brand new

The clearance with the caliper was a bit tight and got scratched, so I had it repainted.
The finish is perfect as always (*´ω`*) hehe

Reliable aftermarket wheels. The air valve is solid and well-made—a great deal!

It’s been a while since I’ve installed Pirelli tires.
With both vertical and horizontal alignment perfectly tight, the handling should be reassuring.

I swapped the bolts for Honda OEM ones to keep it looking stock.

The profile looks really good, and my expectations are very high.

The compound is SC3, so it’s a tire you can enjoy with confidence without being affected by temperature dependency.
Now go ahead and test it out.

The chain line clearance has increased.
With the α14, it was pretty tight, but now there’s plenty of room.
That’s another great point.

Engine oil is Shell Advance 4T Ultra

I was amazed at how clean it was—didn’t even need changing.
FCR with a power filter, yet the oil is this clean—it just feels good.

Quick test.
I put a silicone hose (black) over the spring. Hopefully it reduces the vibration noise!

All that’s left is to get the inspection and it’s complete.
There’s a lot of rain next week, ugh…

Z1-R Season 3: Installing Pirelli Phantom Sportscomp RS Tires.

Vehicle: Kawasaki Z1-R. Parts: Pirelli Phantom Sportscomp RS (Front: 110/80-18, Rear: 150/70-18). Concept: I wanted a tire that perfectly matches the classic 1980s aesthetic of the Z1-R but provides modern, high-performance grip to handle the upgraded engine (WEB CAM & CVK30 carbs). Verdict: The “RS” version is exactly that—a classic tread pattern with modern racing compound. The bike looks incredible, and I can’t wait to test the new level of traction!

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