My wheels on my Civic call for 80 ft.-lbs. so I purchased the cheap beam 150 ft.-lb. wrench. I'd also like to be able to use it on oil pan drain plugs and my filter for my Sienna (10 and 18 ft.-lbs.), but I'm afraid this bigger one won't be accurate enough. Should I just get the 75 ft.-lb. wrench and max it out for my wheels so I'll have one for misc. engine work or do I really need to get both?