iRoll Motors is the only source for Panasport wheels specifically made for the Volvo 1800 models in the US. These are 15" x 6" wide with offsets designed for the later ('70 - '73) 1800 (E/ES) bolt patterns. They work well with a 195/60 - 15 tire, or a 205/60. They are one piece, light weight alloy (just over 15 lbs), that increase track and tire footprint, all which improve handling. When combined with some high performance shocks (Koni, Bilstein) and springs/sway bar (VPD, IPD) the handling of any 1800 is transformed dramatically. Shipped with WH66250 center caps. These also fit other RWD Volvos with 4 wheel disc brakes (140, 164, 240, 700, 900)