In a recent post about Miata tire replacement research, I was close to finding a good compromise tire for my 1999 Mazda Miata, Karlino.

Karlino in a tire quandary...

You see, earlier this week I noticed Karlino’s handling became unpredictable & worrisome.  I then noticed my left rear tire losing air pressure.  I concluded that the tire had a slow leak.  So, after work I took Karlino to my local Discount Tire store.

My local Discount Tire Retailer

In the course of reviewing my Miata’s tires they strongly suggested I needed to replace my front tires ASAP!  Well, I already knew that…since last November…

My previously worn front tires, this picture is from NOV-2009.

The tire I had already considered had a special gift card offer – it worked out to almost 1 free tire out of the 4.  The gift card promo was ending on May 1st, 2010.  That & a favorable 0% Discount Tire card promo swayed me to go ahead & purchased my new tires.

Discount Tire Card

The guys at the shop did a nice, quick & clean job of mounting, balancing & installing these new tires – these guys are ALWAYS hustling!

The Discount Tire guys, fast at work on Karlino!

Discount Tire guy prepping to torque the lug nuts on Karlino...

The tires I chose to purchase are Bridgestone Potenza RE960 Pole Position, in the 195/60-14 size, up from the original size of 185/60-14.  I am now debating having gone to a slightly wider tire on the OEM 6″ rim width….

Bridgestone Potenza RE960S Pole Position - My new tires!

Driving Karlino is smoother & very quiet.  I thought the slightly taller tire (but same 60 aspect ratio), along with the wider footprint, would grant me renewed confidence in daily driving & more autocross corner traction.  Well, it’s not so!  There is a slight delay when I make a quick steering input.  Trying to hold the line in a constant radius corner is concerning.  I feel as if I have to correct the steering angle multiple times through the corner.  I also don’t know where the limit of traction adhesion is.  I’m almost afraid to get there as I don’t know how this tire would react at the limit.

Cornering grip explained...

In addition, the more I look at Karlino, with the bigger tires… it  sort of reminds me of one of the animated cars in the movie “Who Framed Roger Rabbit?”

Karlino on the new "fat" Bridgestone Potenza tires

Benny the Cab, from the movie, Who Framed Roger Rabbit?

After 3 days of driving with these new, unknown tires, & even raising the air pressure to 35 PSI (up from 28), I went back to the Discount Tire store.  I discussed my concerns & was informed I had up to 30 days to make a decision to change them for full credit (just as long as the are in relatively, like new, condition).

The new, "wonky", Bridgestone Potenza RE960 Pole Position tire...

Racing Ready is looking forward to better driving experiences…once I make the correct tire decision.

Dan

P.S. – I will have to temper my enthusiasm for autocrossing for a couple of months, as my work schedule has me now working on Saturdays & Sundays, when autocross & track events occur.  Damn, how counter-productive for me!

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