How tall tires before rubbing?

[AhrnNilsson]

Hi Caravell 5.1 Im going to get some new AT tiers I know the easy way is to keep it 215 65r16 but I do a lot of gravel roads and would like to go a little bigger on the sidewall for comfort. The front Ill keep stock size due to gearing. But in the back I think I could go a little bigger. unless it starts to rub when bottoming out? I think I remember once when driving really backloaded. the tires rubbed on bigger bumps? Am I mistaken? Was it just the springs making the noise, or could it actually be an issue going any bigger?

 

[StratosFearXX]

Depends on tyre width as well, the height (profile) of the tyre is a percentage of the width. As to the answer to your question, hard to say

 

[StratosFearXX]

And I think going bigger on the back only might be a mistake. For reference I'm on 265/40/20 all round, 8.5J front 10J back staggered, 60mm lowered. Occasional rub on the fronts on full lock and a camber. Loads of tyres threads on here.

Oh, and I hear @CRS Performance are rather good at this stuff.

 

[DaveD]

would like to go a little bigger on the sidewall for comfort. The front Ill keep stock size due to gearing. But in the back I think I could go a little bigger.

You sit much closer to the front wheels than the rear wheels so I doubt just changing the rear is going to improve comfort much, it will, however, make it more difficult if you get a puncture and the spare wheel you are carrying is the wrong size.
I'd always keep the tyres the same all around.

 

[Lubrown]

There are some good ‘rules’ (read above) on this page and it has a summary of tyre widths vs rim widths…

Link

Interesting for @StratosFearXX they suggest an 8.5j rim has a max tyre width of 255?

Also worth remembering- if your tyres are all the same width but your rims are different there is potential for the overall tyre diameter on each axle to differ - as the tyre is spread the sidewall height effectively reduces. Some of this may be tweaked by varying pressure I guess.

 

[StratosFearXX]

There are some good ‘rules’ (read above) on this page and it has a summary of tyre widths vs rim widths…

Link

Interesting for @StratosFearXX they suggest an 8.5j rim has a max tyre width of 255?

Also worth remembering- if your tyres are all the same width but your rims are different there is potential for the overall tyre diameter on each axle to differ - as the tyre is spread the sidewall height effectively reduces. Some of this may be tweaked by varying pressure I guess.

Yes absolutely, and thank you. All those things!

Mine's a 4Motion manual and seem to work so far .

 

[AhrnNilsson]

Ok so I’m keeping the original 16” rim, I think the 205 75 is the one I’ll go for I did a lot of searching online and calculations with will they fit website. That’s about 10% taller sidewall. And general grabbers at3 have a load rated tire