Originally Posted by mackatak
I posted a similar question on the wheel/tire thread but haven't gotten any response. And sorry if this is a dumb question cause I'm pretty clueless when it comes to tires. Why do you guys oversize your tires? Is it for the extra ground clearance, or appearance, or...? I'm leaning toward getting Goodyear Duratrac's which come in the same size as the crappy Latitudes that came on my "trail rated" Overland diesel. If I stick with the Duratrac in 265/60R18 shouldn't those work just fine with no rubbing or speedo issues?
Thanks for any help you can provide.
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I saw your post in the other thread.
Typically if you plan on taking a vehicle off-road, legitimately off-road, you will want the most ground clearance that you can safely have while maintaining a controllable center of gravity, maintain safe vehicle dynamics and not overly impact your mileage vs the return of the ground clearance. Plus, if you know where you plan on taking your vehicle you will know how much ground clearance you will need, thus that can also make up your decision. Changing tire size unless you have a tool to correct your speedo will throw off your numbers.
If you just want a beefier tire look then yes, I would just stick to the stock tire size and run a beefier tire. If you are looking to maximize the clearance and abilities of the vehicle when in rugged terrain then you want to go larger. Typically the rule of thumb is that it is safe to go up 1 tire size. Below I have pasted a link that will show you what the different sizes will increase over the stock size. They are missing a few sizes in between all of the ones they have posted but it should give you an idea.
Off Road 18"s