did you See the last digits in the number? 98T and the name Viva 2
or read the good year spec on those tires?
215 65 R16 96T.
not all tires are the same,
same size..... its designed for high pressure and MPG, that is all i can find
and the web forums bleed with this complaint,
under-inflation of the goodyear viva 2
why not ask Goodyear.?
the 98T is the clue, !!
Im no tire expert but i do know my limits, and i do not know every time made
especially, the non stock tires, so what im saying here, is get the spec on THAT
tire, then see what you have.
and he did say the foot print was curved at low pressures, so I believe him.
get the spec on the tire, better the load tables.
I think this is an LRR type tire , low rolling resistance, not sure, due to goodyear pages , hard to navigate....
OP post full tire wall data, that max pressure, might just give away LLR or not;
Maybe I should "quantify" my last post - the tire placard pressure only holds true for the tire size posted on the placard and when mounted on the stock rim or one of equivalent width - change the tire width or the rim width and the pressure changes.
Having said that, unless you change the size dramatically, the placard pressure will be very close to what you need to use.
Get the numbers and compare the weight - it's not that much different - also compare the tire sizes, assuming the size you mentioned is the stock size, the 1.8 Sport uses a larger tire than the 1.6 does, that size is also one of the two used on a GV, and 26 psi is the recommended pressure for that vehicle.
There is actually a mathematical formula that can be used to calculate the required pressure - based on the load capacity of the tire and the weight of the vehicle - divide the weight of the vehicle by four and then use that as a percentage of the max load of the tire, and that will give you what percentage of the max pressure should be used.
__________________
93 - 1.3 Suzuki Swift GLX
98 - 1.8 Mitsubishi Pajero iO
98 - 2.0 Suzuki Grand Vitara
Maybe I should "quantify" my last post - the tire placard pressure only holds true for the tire size posted on the placard and when mounted on the stock rim or one of equivalent width - change the tire width or the rim width and the pressure changes.
Having said that, unless you change the size dramatically, the placard pressure will be very close to what you need to use.
Get the numbers and compare the weight - it's not that much different - also compare the tire sizes, assuming the size you mentioned is the stock size, the 1.8 Sport uses a larger tire than the 1.6 does, that size is also one of the two used on a GV, and 26 psi is the recommended pressure for that vehicle.
There is actually a mathematical formula that can be used to calculate the required pressure - based on the load capacity of the tire and the weight of the vehicle - divide the weight of the vehicle by four and then use that as a percentage of the max load of the tire, and that will give you what percentage of the max pressure should be used.
My two new Goodyear Viva 2 is 215 65 R16 98S
two old is 215 65 R16 98T
I think all of them are stock size, but NOT stock tire.
data in these tires are hard to get.
these are LRR tires.
every post in the net (lots of complaints on pressure)
said 32-44 was the range
if true (you've yet to state side wall data on pressure?)
if true , are NOT STOCK and are far from that.
get Goodyear in the loop and things get better.<<<
you said they cup at low pressure.
i can only trust your eyes. i cant see it cup(or concave) the tread.
this is CONTACT patch, if crowned or concave , traction will be bad.
with full weight of car on each tire.
Quote:
could see obvious concave shape around contact surface under 25.5 psi. And the sidewall around contact surface is extruded out a little bit which is different from the rest part of sidewall.
ILL take you at your word.
keep in mind i dont know LRR tires from shinola, they are a new design.
not only that walmart, cant ask the clueless there either.
dont confuse max load and pressure with your application!
how odd you skipped even stating max pressure?
that number is the limit on a fully loaded truck
750x 4 is 3000K (ever go there?)
in lbs 1653 x 4 is 6,612 lbs 3 freaking tons.
the max cargo is 1000lb(IIRC) , so that number is useless. on a 2 ton PU sure. full of sand but this is not a PU. (pu=pickup or flat bed)
each tire has a table (all tires do)
you take car weight and divide by 4, (using F/R ratios are smart but i skip this)
get that number
and look up the tire chart (unique to each type maker tire)
and look up idea pressure for THAT weight
this assures that the tire is not cupped or crowned.
if you ever drove on ice, you'd,, know both cupped and crowned both are a danger driving. I suspect you do , as you did, look (10 points) and 100 points for seeing
it doing that. Great observation skills !!!!
this is how i cured my LT235 truck tires from crowning.
i got my hands on the table (mfg) and set it right then tested it.
good perfect tire patch.
finding your tables , is hard.
but as a random example here is one,
just so you know there really is engineering data available and is not some wild a$$ guess.
1guess
2trial and error do the skid test , and check patch content and size
3use the equations. (xls) (java, pick a language but not Lisp the inventor died this year, RIP)
4use Goodyear tables.
5 drive it like you stole it
6 Door jam tags after 20 year , what to they mean? you tell me....
then the classic !
Quote:
DO I need to remind everybody of a little incident at FORD concerning tire pressures and all the problems they had with FIRESTONE tires, because of running the tires under-inflated (Fords specs(tag) not Firestones tables) I have only been working on cars since I was 14 but I guess that does not qualify me to know anything. at 65.
btw, IMO
the car makers point to the TAG (they dont know what you have and for sure 20 years later)
and the tire makers like to point to the car makers, when asked pressures,. (not trucks because it's their LIFE BLOOD)
That is because of lawsuits. so everyone just points..... (hard to lay blame in a vacuum ,no?)
and DOT?, their too busy trying to survive a fiscal cliff,, LOL If i was DOT, all tire makers would be force to post the tables, on their home page. (full specs)
and the best for last.. (you left of the P on your tires size ,right?)
look at max pressure here..... do those look like tires made in 1989 to 1995? NO WAY!
as the story goes "its not your father "Oldsmobile' anymore" rings true..... no? And Oh'bummer said (MPG) Pump up dem tires , ok? http://www.tirerack.com/tires/tires....6AFM&tab=Specs
I saw load index 98 = 750kg or 1653 @ max pressure.
Is 750kg for each axle weight or for each tire?
Per tire. Although tire manufacturers list recommende tire pressure, people do have 'preferences'. You can pump yours up to 26 or 28 etc., all the way around, and see if you prefer this. Some people go higher up - much is a matter of preference and how hard a ride you want. Here is a bit of reading for you: Dunlop Tires | Care & Maintenance | Proper Inflation
Radial tires can look underinflated (bulging a bit at the bottome) but this is how they are supposed to look, actually.
sure can and this very tire , (not stock on any suzuki) is all over the ecommoder forum
and they run the tire rim max at 44psi (this tire and nice list of other better ones)
and then report, mpg, gains,. endless tests..
some like traction
others want MPG
the great ponderment today.. save fuel or your life.
if on dry ground, use 44
if not, read the tables. and live
he said the bottom were curved, id only hope he knows the difference from
the side walls, and the tread side.
i think he does...
here it is again,
Quote:
around contact surface
laughing now, contact to earth or air??? LOL
I think, dont KNOW This tire.
the LRR tires. are with very stiff tread, allowing high pressure to be attained and not much crowning.... the makers are all closed mouth and proprietary on that issues
if that is true ,and i can say for some makers IT IS, then you need to run high pressures.
one way, is to have thinner side walls. so the ballooning happens on the side. and not the thread. see?
that means a great need for more pressure ! , so the side walls dont flex to bad an get too hot. at 750kg.
as i said, it's NO STOCK TIRE.
read up on it.
dont confuse max load and pressure with your application!
how odd you skipped even stating max pressure?
that number is the limit on a fully loaded truck
750x 4 is 3000K (ever go there?)
look at max pressure here..... do those look like tires made in 1989 to 1995? NO WAY!
as the story goes "its not your father "Oldsmobile' anymore" rings true..... no? And Oh'bummer said (MPG) Pump up dem tires , ok? Goodyear*Assurance Fuel Max
LOL, I call the goodyear customer service. They claimed that it is 23psi that they know from Suzuki Dealer. Finally, they said they can email me a table(load vs psi). hopefully they are not kidding me.
The MAX tire pressure for all 4 tires is 44psi.
I think 23 psi is way too low. I could attach pictures when they are at 30 psi.
You could see the shape of the contact surface. Yesterday, when they are at 25.5 psi, the shape is much worse than 30 psi.
sure can and this very tire , (not stock on any suzuki) is all over the ecommoder forum
and they run the tire rim max at 44psi
and then report, mpg, gains,. endless tests..
some like traction
others want MPG
the great ponderment today.. safe fuel or your life.
if on dry ground, use 44
if not, read the tables. and live
he said the bottom were curved, id only hope he knows the difference from
the side walls, and the tread side.
i think he does...
here it is again,
laughing now, contact to earth or air??? LOL
my bad explanation. I don't know how to explain it.
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