79 rv cab chassis wheel + tyre sizes

thanks for the reply desert,the tyres that are on there new are265x 70 if i go to 265x75 how much under diff clearance would this give me any idea? at the moment most driving on black top during the week but many weekend trips planned also trying to decide on tyres i know its a bit of a boring conversation but when you buy a new rig its one of the things youv got to get sorted, was tossing up between coopers ST or BFG AT also like the look of New STT coopers but dont want to be driven crazy with tyre wine /howl any suggestions ?????

About 2mm difference in clearance from 70 to 75 section tyres. I'd stay away from BFG's until they sort their problems. The Cooper ST are nice and quiet, the STT is still too new to comment.

Thanks Phil
sorry for the delay follow up ,Too many things on the go at the moment the 79 should be ready for pickup next week and im really looking foward to getting away and giving it a workout.
i also joined in at 70scool and i see youve been keeping active yourself your truck looks good
can you confirm if 265x75x16 are legal insurance wise?
can you confirm if its only a couple mm differance under the diff with these tyres?
you also mentioned you were running MTRS Goodyears how are you finding them ??? what is the noise level like on the hwy and around town?

Hi Blu,

I know what you mean - planning and fitting out the farm truck can keep you pretty busy.

70scool has only been going this year and is slowly building up. Theres not much else out there in forums for the 79series. The TD 79series will no doubt become a very popular vehicle - one went at govt auction a couple of months ago for $48k.

Absolutely no problem with the legality of 265/75R16, as they are the same diameter as the standard 750R16 that most 78/79series come with.

The 265/75 are 25mm greater diameter than the 265/70. So clearance under diff should be about 12mm greater when new.

The Goodyear MTRs have now done 35,000km - 25k on a Prado and 10k on the 79series. They perform very well in the rough stuff - very rarely puncture or chip out - mine have done a lot of trips without any punctures. Mine have 9-10mm tread left, so I expect they are less than half worn.

They are fairly quiet when you first buy them, but as they wear, they will become noisier - we don't find this a problem on the truck. And being an aggressive tyre, they will cost you probably 0.5 l/100k in fuel.

I'd recommend them - they are certainly a stronger tyre than the Coopers or BFG based on experiences on the trips I've been on.

I'm sure you'll have a big grin next week.

Cheers
Phil