BS ISO 4000-2:2021 pdf download – Passenger car tyres and rims Part 2: Rims
This document specifies the designation, contour and dimensions of 5° tapered (drop-centre) rims primarily intended for passenger cars.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 3911, Wheels and rims for pneumatic tyres — Vocabulary, designation and marking
ISO 9413, Tyre valves — Dimensions and designation
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 3911 and ISO 9413 apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
4 Designation and marking
The rim shall be designated by its nominal rim-diameter code, nominal rim-width code and rim flange type (e.g. 15 ⨯ 6 J or 13 ⨯ 5.50 B) defined by ISO 3911.
5 5° tapered (drop-centre) rims
5.1 Rim flanges
Recommended rim flange contours are given in Table 1 for the nominal rim diameter codes.
5.2 Rim contours
Dimensions and tolerances of the rims shall be as given in Figure 1 and Table 2. Optional hump contours and their dimensions are given in Figure 2 and Table 3.
The rim contour shall be rotational symmetric except for the valve hole area.BS ISO 4000-2 pdf download.