A couple possibilities.
1. The reservoir and adjoining hose (not so likely since you say it is on the tire) but a very easy check.
2. The oil cooler hoses which are just inboard of the passenger tire on the top of the cooler. If that is the case, most of the coolant would be on the inner surface of the tire so perhaps clarification of where on the tire you are observing coolant would help. After many years of service, they become quite brittle. The best way to see is to look up past the front side of the passenger CV - one is right there - a small 6 inch hose. The second you can see from the engine compartment - it is on the back side of the engine and runs from just under the exhaust valve cover to the oil cooler. When mine went bad, the water ran down the cv and tie rods and dripped down until it just started pouring down. If you just fill up the radiator, water will get to it and you can see it.
3. It could be the radiator but I would be skeptical, the coolant leaking from the radiator would most likely roll to the center of the splash guard and would be tough to end up on the tire.
4. Doubt it is the water pump as the water would more be running down the oil pan.
those are the only water sources I can think of on the passenger side.
1. The reservoir and adjoining hose (not so likely since you say it is on the tire) but a very easy check.
2. The oil cooler hoses which are just inboard of the passenger tire on the top of the cooler. If that is the case, most of the coolant would be on the inner surface of the tire so perhaps clarification of where on the tire you are observing coolant would help. After many years of service, they become quite brittle. The best way to see is to look up past the front side of the passenger CV - one is right there - a small 6 inch hose. The second you can see from the engine compartment - it is on the back side of the engine and runs from just under the exhaust valve cover to the oil cooler. When mine went bad, the water ran down the cv and tie rods and dripped down until it just started pouring down. If you just fill up the radiator, water will get to it and you can see it.
3. It could be the radiator but I would be skeptical, the coolant leaking from the radiator would most likely roll to the center of the splash guard and would be tough to end up on the tire.
4. Doubt it is the water pump as the water would more be running down the oil pan.
those are the only water sources I can think of on the passenger side.
good luck hope i'm wrong and you'll get it fix asap
