diff --git a/src/monocoque/devices/hapticeffect.c b/src/monocoque/devices/hapticeffect.c
index d8014b6..14ecd8d 100644
--- a/src/monocoque/devices/hapticeffect.c
+++ b/src/monocoque/devices/hapticeffect.c
@@ -63,11 +63,13 @@ int loadtyreconfig(SimData* simdata, char* configfile)
         if(config_car != NULL)
         {
             const char* car;
+            int sim;
             double tyre0;
             double tyre1;
             double tyre2;
             double tyre3;
             config_setting_lookup_string(config_car, "car", &car);
+            config_setting_lookup_int(config_car, "sim", &sim);
             config_setting_lookup_float(config_car, "tyre0", &tyre0);
             config_setting_lookup_float(config_car, "tyre1", &tyre1);
             config_setting_lookup_float(config_car, "tyre2", &tyre2);
@@ -77,7 +79,7 @@ int loadtyreconfig(SimData* simdata, char* configfile)
             {
                 if(simdata->car[0] != '\0' && car[0] != '\0')
                 {
-                    if (strcicmp(car, simdata->car) == 0)
+                    if (strcicmp(car, simdata->car) == 0 && sim == simdata->sim)
                     {
                         slogt("found saved car %s with tyre diameters %f %f %f %f", car, tyre0, tyre1, tyre2, tyre3);
                         simdata->tyrediameter[0] = tyre0;
@@ -220,6 +222,8 @@ int savetyreconfig(SimData* simdata, char* configfile)
 
     setting = config_setting_add(carobject, "car", CONFIG_TYPE_STRING);
     config_setting_set_string(setting, simdata->car);
+    setting = config_setting_add(carobject, "sim", CONFIG_TYPE_INT);
+    config_setting_set_int(setting, simdata->sim);
     setting = config_setting_add(carobject, "tyre0", CONFIG_TYPE_FLOAT);
     config_setting_set_float(setting, simdata->tyrediameter[0]);
     setting = config_setting_add(carobject, "tyre1", CONFIG_TYPE_FLOAT);