I am going to have this exact size installed on my 2006 250 king ranch fx4 on Friday. I'll post some pics then.

 

Welcome to FTE hwy419 enjoy your stay.


I added a Sticky to the top of the forum, Thanks Jon.

 

Had 295/65/20 trail grapplers on my 06. Looked AMAZING.


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Ended up being 35.4 inches tall.

 

Thank you Maxium! VERY long-time lurker here It'll be nice to make some contributions for a change!

 

Ok so I know you were asking about "stock" 250 with the 295/65/20s, but the 2.5" leveling kit was irresistible especially since it was in the shop for the new shoes. But these are the 295/60/R20 Nitto Trail Grapplers that you were asking about. I think they look AWESOME. A proper camera would get the correct light on the tires, but it's a lazy Saturday around here today

 

did that mess up your speedometer???

 

Can't say for certain that it didn't, but in theory it shouldn't have. Door label calls for 275/65/R20s and while I am no expert on tire sizes, my math comes out like this:

65% of 275mm = 178.75mm in height
60% of 295mm = 177mm in height

Seems to me the new tires are actually 1.75mm shorter than the stock tires. Probably not enough impact on the circumference to make a significant difference.

Anyone?

 

This picture should give you a better idea of what the tire actually looks like...

 

The LT295/60r20 is 34.45" tall and is 12.13" wide
vs the stock Michelins
LT275/65r20 = 34.4" tall and 11.0 " wide

So it should affect your speedo

 

hwy419,
those are the 295/ "60" /20 size you have in this most recent closeup pic post?

 

Yes Sneaky. They are the 295/60/R20s.

275/65/20s = 108.0707872834889" circumference
295/60/20s = 108.2278669161684" circumference

295/60s travel 0.1% faster than the 275/65s.

So while the speedometer reads 70mph, I'm actually at 70.1mph? Maybe my math is wrong and there really is a SIGNIFICANT difference.

 

When I did my 295/65/20's, I was off close to 4 mph.

 

295/65 would be an additional 3.01% of circumference. So 70mph x 1.301 = 72.1mph. Not really even quite close to 74mph. I guess I am missing something and need to get mine checked out. Wish someone here could give us the math...

 

Thanks for confirming the size. How well did they balance? Any vibrations at higher highway speeds?