Tire load info for '92 Q45

Post by **kdkrone** » Mon May 09, 2005 7:11 am

What is the minimum tire load for a 1992 Q45?

The stock size 215/65/15 in a Falken 512 is 94. The 225/60/15 is 96. Which is acceptable? Which is desirable?

Is 94 enough? What would I notice between the 215 and the 225 tire width?

Thanks,Ken K

Post by **szh** » Mon May 09, 2005 8:17 am

kdkrone wrote:What is the minimum tire load for a 1992 Q45?

The stock size 215/65/15 in a Falken 512 is 94. The 225/60/15 is 96. Which is acceptable? Which is desirable?

Is 94 enough? What would I notice between the 215 and the 225 tire width?

Thanks,Ken K

A load index of 95 is the generally accepted minimum. More is better! 96 or 97 would be better, for example.

Z

Post by **Rex** » Mon May 09, 2005 9:52 am

Be careful not to fall into the "only 1 below is okay" trap, that means it's only 1 below when new, and further as it ages. I'm sure this was taken into account when establishing the minimum.

Long term sidewall stiffness is noticable with tires having a load rating at 99 or even 100.

Post by **96Qowner** » Mon May 09, 2005 10:21 am

And 235-60s are a better fit for 15s. 225-60s would be a smaller diameter than the 215-65s. Here's a calculator for tire sizing:

http://www.miata.net/garage/tirecalc.html

Post by **elwesso** » Mon May 09, 2005 10:22 am

235-60-15 is usually a 98 rating so those are perfect!

Post by **maxnix** » Mon May 09, 2005 12:08 pm

kdkrone wrote: The stock size 215/65/15 in a Falken 512 is 94.

I find it incredible that Falken would make an OEMspecific size tire that doesn't meet OEM spedification! What were they thinking?

Post by **kdkrone** » Mon May 09, 2005 3:51 pm

maxnix wrote:I find it incredible that Falken would make an OEMspecific size tire that doesn't meet OEM spedification! What were they thinking?

Actually, the tire website had the 215/65/15 as 94H load index and have now corrected it. In actual fact, the tire is 96H, so it is actually slightly higher than the minimum that is listed (95).

ThanksKen K

Post by **Rex** » Mon May 09, 2005 4:59 pm

kdkrone wrote:Actually, the tire website had the 215/65/15 as 94H load index and have now corrected it. In actual fact, the tire is 96H, so it is actually slightly higher than the minimum that is listed (95).

ThanksKen K

Good news .

Post by **Q45tech** » Mon May 09, 2005 5:30 pm

Unfortunately, the max load is at max inflation [not typical to see tires inflated to 44 or 51 psi.

What we don't know is the effect of lower than max inflation. Older tires used 35 psi [for 36 psi max] to test max load...........but whether this applies to 44/51 is extremely doubtful.

The 95V oem minimum load index was for Michelins top of the line tire, whether one could compare a lesser brand and equivalence is unknown.

Tire load info for '92 Q45

Tire load info for '92 Q45

Re: Tire load info for '92 Q45 (kdkrone)

Re: Tire load info for '92 Q45 (kdkrone)

Re: Tire load info for '92 Q45 (96Qowner)

Re: Tire load info for '92 Q45 (kdkrone)

Re: Tire load info for '92 Q45 (maxnix)

Re: Tire load info for '92 Q45 (kdkrone)

Re: Tire load info for '92 Q45 (Rex)

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