diff --git a/src/cluster.c b/src/cluster.c
index 2aeb8cd..5ae661f 100644
--- a/src/cluster.c
+++ b/src/cluster.c
@@ -126,7 +126,7 @@ void hexagram_cluster_draw_fg(hexagram_cluster *cluster,
                                cluster->state.rpm);
 
     hexagram_speedo_draw_needle(&cluster->speedo, cr,
-                                (2.032 * cluster->state.rps * 3600) / 1000.0);
+                                (2.00152 * cluster->state.rps * 3600) / 1000.0);
 
     hexagram_thermo_draw_needle(&cluster->thermo, cr,
                                 cluster->state.temp);
diff --git a/src/speedo.c b/src/speedo.c
index f56e0ba..335e824 100644
--- a/src/speedo.c
+++ b/src/speedo.c
@@ -68,5 +68,5 @@ void hexagram_speedo_draw_needle(hexagram_speedo *speedo,
     hexagram_gauge_draw_needle(&speedo->gauge,
                                cr,
                                0.8,
-                               kph / 290);
+                               kph / 289.682);
 }