The earliest laser rangefinder I found mentioned for War Thunder is the Swedish Ikv 91 at 7.3 BR. Multiple community sources also point to the Wiesel 1A4 at 7.0 BR as having thermal imaging plus a laser rangefinder, which may make it an even earlier example depending on whether you mean “lowest BR vehicle with an LRF” or “first tank specifically noted for it.”

What that means

  • Ikv 91 — 7.3 BR : commonly cited as the first/earliest tank with a laser rangefinder.
  • Wiesel 1A4 — 7.0 BR : appears in community discussion as having a laser rangefinder too, and it sits lower in BR than the Ikv 91.
  • Some sources also mention other vehicles around 8.3 like the M60A2, but those are not the earliest.

Practical answer

If you want the safest one-line answer: the Ikv 91 at 7.3 BR is the classic earliest answer people give, but the Wiesel 1A4 at 7.0 BR appears to be an even lower-BR example.

Caveat

War Thunder vehicle features can vary by version, nation, and update, so “earliest” can depend on whether you mean earliest overall , earliest tank , or earliest currently in game.

TL;DR: likely Wiesel 1A4 at 7.0 BR , with Ikv 91 at 7.3 BR being the more commonly cited tank answer.