285's vs 305's????

[jbeasts10]

Originally Posted by 1BadStroker

285 75 16 Converted to inches is a 33" x 11.22 x 16

305 70 16 Converted is inches a 33" x 12.01 x 16

So 3/4 an inch wider no height difference however there are some brands that vary! 2 1/2 inches no I have seen 34.5 inches in some brands

Yeah,we put them side by side off the truck and they were definately taller and a little wider
The do ride very good.Seems the compound of the Goodyears were alot harder.

[LHMissions]

I've been running 305/70R16E's on stock Lariat rims for the last...100,000 miles - 3 sets of tires. First 2 sets were Nitto's - I got stupid thinking I would try something different & went with Kumho AT's. Should have stayed with Nitto's. Going to try the Goodyear Duratrac's next but with 285's. Going for higher weight capacity of the 285's.

[banone403]

just got some 305/70/16 terra grapplers on my truck and love them so far

[blue72]

Here is a link to a calculator for you guys to check out when it comes to tires sizes. As already suggested there should be very little difference between a 285/75 and a 305/70. Different tire companys have different tread depths that could alter the tire height. Also a 33" tire that came new with 17/32nds tread depth will be a lot shorter if it is worn out. Lets say it is worn to 3/32nds, so it has lost 14/32nds height on the top and bottom. That is a loss of about one full inch in tire height. 2 1/2 inches still seems like a lot. Jbeasts were both tires inflated when placed side by side?

Tire Calculator and Comparator

[LHMissions]

Are you sure the 2 1/2" difference wasnt a 305/70R17? The 17" 305 is on average a 34.5" tall tire depending on manufacturer. I once looked at 305/70R17 Nitto's - they were a good 1.5" taller then the 305/70R16 counterparts.

Blue72, the wearout would be 7/32's top and bottom totaling 14/32's. 7/32's is just shy of a 1/4" Top and bottom only a 1/2" of wear total.

[03_Turbo7.3]

im running 305/55/20 on the truck..with no leveling kit they rub like a mofo on full lock..enough to make the truck not move lol there great tires..switching to either 35x12.5x20 or another set of 305/55/20 but nittos or something close too

[jbeasts10]

Originally Posted by blue72

Here is a link to a calculator for you guys to check out when it comes to tires sizes. As already suggested there should be very little difference between a 285/75 and a 305/70. Different tire companys have different tread depths that could alter the tire height. Also a 33" tire that came new with 17/32nds tread depth will be a lot shorter if it is worn out. Lets say it is worn to 3/32nds, so it has lost 14/32nds height on the top and bottom. That is a loss of about one full inch in tire height. 2 1/2 inches still seems like a lot. Jbeasts were both tires inflated when placed side by side?

Tire Calculator and Comparator

Yeah,they were both inflated.The 285's were shot.I wish I had taken a pic of the difference or better yet,not even mentioned it.

[orng1]

Originally Posted by blue72

Here is a link to a calculator for you guys to check out when it comes to tires sizes. As already suggested there should be very little difference between a 285/75 and a 305/70. Different tire companys have different tread depths that could alter the tire height. Also a 33" tire that came new with 17/32nds tread depth will be a lot shorter if it is worn out. Lets say it is worn to 3/32nds, so it has lost 14/32nds height on the top and bottom. That is a loss of about one full inch in tire height. 2 1/2 inches still seems like a lot. Jbeasts were both tires inflated when placed side by side?

Tire Calculator and Comparator

I was about to post that, good thing I decided to read through the entire thread this time.

[Rob454]

I put 305 70 16 on m my truck from the 285 75 16. the 305s are slightly taller. i would say about 1 inch or so. its not really noticeable. the only place you notice it is on the front tire fender well clearnace. its a little less with the 305s Still clears with no trimming whatsoever. the tires are mud tires.
its really more noticeable on the front than the back. the back sits so high you cant really see the difference. you can see it on the front more but its not that much of a change. I noticed no fuel mileage loss after these tires. If any loss its less than 1/2 mile per gallon. I jsut went from Reno to orange county using about 1/2 a tank of gas. When i got home the gas guage was between 1/4 and half abotu 3/4 of the way up towards the 1/2 tank mark.I have a leveling kit but I havent had the time to put it on.

Before with stock tires

After with mud tires

Front wheel clearances