Tire Load & Speed Index
PSI, Weight & Rating Lookup
$1.99 · Designed for iPad. Not verified for macOS.
Instant tire load index and speed rating reference.
Reading a tire sidewall and need to know what that load index number or speed letter actually means? This app decodes it instantly.
Select any load index from 60 to 130 to see maximum weight per tire in both lbs and kg. Pick any speed rating from L to ZR to see the maximum speed in mph and km/h.
WHAT YOU GET:
- Load index to max weight conversion (lbs and kg)
- Speed rating to max speed conversion (mph and km/h)
- Quick reference table for common load indices (70-120)
- Stepper control for fast index browsing
LOAD INDEX RANGE:
Covers indices 60 through 130 per ISO 4000-1 standard. Every value mapped to exact weight.
SPEED RATINGS:
L, M, N, P, Q, R, S, T, U, H, V, W, Y, and ZR — all with max speed values.
Works completely offline. No account required. Built for mechanics, tire shop technicians, fleet managers, and vehicle owners who need fast tire spec lookups.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Added a More Pro Tools section to discover related field calculators.
The developer, Shanghai Sheyuan Network Technology Co., Ltd., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Shanghai Sheyuan Network Technology Co., Ltd.
- Size
- 1.1 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Sheyuan Inc.
