Tire suggestion and different size spare wheel questions

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Oct 9, 2018
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Sorry for a similar set of questions but have a slightly different ask than here:
and here:

Just purchased a 2014 LX, and thought I was ready to go big with E rated AT tires, and thus found a decent deal on 4 of these Tundra 18s that had Toyo Open Country 275/70/18's on them with about 30% tread left to test out. Loved the look but don't think I can tolerate the highway noise which is where the majority of my driving takes place. My off-road use at least initially will be forest service roads and light trails.

I wanted 33's and thought I had narrowed it down to the Michelin defenders and continental terrain contact A/T (and maybe BF trail terrains) which seem to strike the balance I am looking for in a tire. The issue is to get the P rated version of these in 33's I would have to go back to the factory 20's as best I can tell. (P rated in r18 max out at 32in?)

My presumption is that the added weight and durability is not worth the tradeoff in more rotating mass and loss of road performance. (Is it fair to say that tread pattern and weight contribute roughly equally to performance loss?)

My other concern is I only bought 4 of the tundra 18's. If I decided to go with the 275/65/18's is there any concern keeping the original spare as long as the external diameters are the same/similar?(weight differences etc.) I also like the idea of doing a 5 tire rotation which is another plus in sticking with the stock rims. I do think I would have to dip, wrap or powder coat them as its too much chrome for me as is.

Any thoughts or advice would be much appreciated!

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Given your use case, keep the 20s and powder coat them bronze. Then get 5 Defender 275/60R20 SL tires and do a 5 tire rotation every 5K miles. Keep the 18s and mount a set of BFG KO2s on them for next years trip to LCDC. :bounce:
 
I wanted 33's and thought I had narrowed it down to the Michelin defenders and continental terrain contact A/T (and maybe BF trail terrains) which seem to strike the balance I am looking for in a tire. The issue is to get the P rated version of these in 33's I would have to go back to the factory 20's as best I can tell. (P rated in r18 max out at 32in?)

I'm running p-rated, 33" Falken AT3W on the same OEM, 20" wheel you have; very happy with them. I got 5 of them, and do the 5-tire rotation. Good road manners, very quiet, handle everything I need without an issue.

Looks are subjective, but I think 20" wheels with meaty tires are the perfect combination for these big SUVs.

My presumption is that the added weight and durability is not worth the tradeoff in more rotating mass and loss of road performance. (Is it fair to say that tread pattern and weight contribute roughly equally to performance loss?)

I have the same line of thought. Unsprung mass matters, and in my experience (on previous vehicles) even a small change of ~5lbs per corner makes a noticeable difference.

My other concern is I only bought 4 of the tundra 18's. If I decided to go with the 275/65/18's is there any concern keeping the original spare as long as the external diameters are the same/similar?(weight differences etc.)

As I understand it, the overall diameter is what matters. Weight differences (per corner) should not play much role, but I can't say for certain. On most vehicles the spare is a very different wheel from the other four, so I'd imagine the weight isn't a big problem, at least as far as spare-use goes. Personally, I'd opt to find a matching wheel regardless.
 
I'm running p-rated, 33" Falken AT3W on the same OEM, 20" wheel you have; very happy with them. I got 5 of them, and do the 5-tire rotation. Good road manners, very quiet, handle everything I need without an issue.

Looks are subjective, but I think 20" wheels with meaty tires are the perfect combination for these big SUVs.



I have the same line of thought. Unsprung mass matters, and in my experience (on previous vehicles) even a small change of ~5lbs per corner makes a noticeable difference.



As I understand it, the overall diameter is what matters. Weight differences (per corner) should not play much role, but I can't say for certain. On most vehicles the spare is a very different wheel from the other four, so I'd imagine the weight isn't a big problem, at least as far as spare-use goes. Personally, I'd opt to find a matching wheel regardless.
Thanks for the response. The wildpeaks on tirerack are listed at 50lbs, where the michelin and contis are like 41/42. I love the way they look though. How would you say the highway noise is?
 
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I'm confused. Why would you want a 275/55/20 tire that is only slightly larger than the OEM tire. It is not even full 32".

I referred to the wrong tire profile (60 vs 55) in my previous reply; corrected.
 

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