Time for replacement tires

Ok guy's i need some help here.
down the road will need tire replacements.
running the old run flats now and here are the measurements,can someone break this down to a under standing language?

Front:Dunlop F16 MN90-18 M/C 65H 4PR Tubeless

REAR:Dunlop K327 MG MR90-18 M/C 71H 4PR Tubeless

Thanks for the Help and Ride Safe

P21 wrote:

Ok guy's i need some help here.
down the road will need tire replacements.
running the old run flats now and here are the measurements,can someone break this down to a under standing language?

Front:Dunlop F16 MN90-18 M/C 65H 4PR Tubeless

REAR:Dunlop K327 MG MR90-18 M/C 71H 4PR Tubeless

Thanks for the Help and Ride Safe

Check the filebase.
mn = 110
mr = 120
The 90 is the aspect ratio - sidewall height in %
18 is rim size
65 and 71 are load ratings
h might be speed the rating
F-16 and k327 are model numbers

ok so whats

3.25S - 19 4PR in front tyre

3.75S 18 4PR rear tyre

thats for the J3 z400 which i hope myne is. haha

should be 3.25 inches instead of 110 millimeters

Brown Bear wrote:

ok so whats

3.25S - 19 4PR in front tyre

Tire is 3.25 inches wide and mounts on a 19 inch diameter rim. It has a 4-ply rating, which as I recall, refers to the strength of the carcass.

3.75S 18 4PR rear tyre

A 3.75 inch wide tire on an 18 inch rim ......

thats for the J3 z400 which i hope myne is. haha

Those are really old designations. Several of the tire manufactures have conversion charts (sort of accurate) on their websites.

i think im starting to hate old bikes. lol.

H is indeed the speed rating. H= 130 mph

Pretty sure Avon tires still has the old measurements.

www.avon-tyres.co.uk/motorbike/z1-900

They make really good "tyres" also, according to other members here.

www.dunlopmotorcycle.com/infocenter_tirecharts.asp

The pirelli sport demons will fit this ride. I have not tried those yet on the heavy KZ. They have worked great on the lighter Ninja 500 so far on street and track.