A Brief chat with ChatGPT about my E-Scooter Tire Listing Guide--More on this to come.
Here’s a clear, side-by-side comparison between your experience-driven list and the general popular size list I shared earlier — with notes on what’s the same, what’s different, and why.
📊 Side-by-Side Comparison
Your LabelYour Sizes / NotesMy Popular SizesMatch / Notes
"S" 8.5" × 2" (straight/angled) — 50/75-6.18.5" × 2" (50/75-6.1)✅ Exact match — this is one of the most common small scooter tires.
"M" 10" × 2.125" (straight/angled) — 60/70-6.5 (called 10 × 2.50 too)10" × 2.125", 10" × 2.5"✅ Matches both popular formats — the 2.125 and 2.5 labeling overlap in industry use and tire marketing.
"L"" 10" × 2.75–3" — 70/65-6.5 or 85/65-6.510" × 3"⚠️ Partially matched — you’re spanning a wider range than the typical 10 × 2.5 group, into larger/wider off-road style sizes.
"XL" 11" × ~3" — 90/65-6.5 (fits tubeless 100/65-6.5)11" × 2.5", 11" × 3"✅ Closely aligns — 11" × 3" is part of the extended popular set, and tubeless 100/65 as an upgrade makes sense.'
"XXL" 12" × 2.5" (angled valve)(Not in my earlier popular list)❌ Less common overall — 12" wheels are more niche (larger/“adventure” scooters).
🔎 What’s Consistent Between Lists
🎯 Same Core Sizes
- 8.5" × 2" (50/75-6.1) — your S size = common commuter size
- 10" × 2.125/2.5 (60/70-6.5) — your M size = very common mid-range size
- 11" × ~3 (90/65-6.5) — your XL = growing in popularity for comfort/off-road
These sizes match both real world service experience and broader market prevalence.
🔍 What Differs
📌 Your “L” (10 × 2.75–3)
- You’re capturing extra-wide 10” tires (often used on scooters with bigger fenders or off-road kits).
- My earlier list included 10" × 3" at the chunky end; your version spans the whole wide range.
- That’s fine — it reflects your field experience where tire width varies by brand and tread type.
📌 Your “XXL” (12 × 2.5)
- Larger wheels like 12" exist (e.g., on heavier dual-motor or high-clearance scooters).
- They’re less common globally than 8.5"–11", but you’ve clearly seen them frequently in flats work.
- That’s not in the “most popular” general list — because most scooters don’t use 12", but it is a valid heavy-duty category.
🧠 Why There Are Variants Like “10 × 2.125-2.50”
Tire marketing matters here:
- Tread manufacturers sometimes label the same tire with both widths (e.g., 2.125 or 2.50) because of sidewall design and tread bulge.
- This leads to overlapping listings — which is exactly why your experience list captures both formats.
So:
Your lived data = broader but real My popular sizes = condensed, industry-wide common sizes
🛞 Valve Stem Notes
Your list specifically calls out:
- Straight vs angled valve stem
That’s practically important for:
- Motor wheel clearance
- Ease of pumping
- Valve accessibility
This is exactly the sort of practical detail that doesn’t show up in basic size lists — but matters in flats work.
📌 Summary
✔ Core Matches
- S (8.5" × 2")
- M (10" × 2.125 / 2.5)
- XL (11" × 3-ish)
⚠ Extended but Real
- L (10" wide 2.75–3)
- XXL (12")
🧠 Your List Adds
- Valve angle detail
- “Size ranges” seen in actual tire stocks
- Fitment by brand
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A Brief chat with ChatGPT about my E-Scooter Tire Listing Guide--More on this to come.
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