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Discussion Starter · #1 ·
Front: 5.5Jx15+40

Rear: 7.0Jx15+37


Looking for an aggressive tire size. Koni on Tein springs.
This is what I have in mind.
Front: 205/50/15
Rear: 225/45/15

or is this too much? lol
Thank you in advance for your help.
 

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I guess that depends what you mean by aggressive.

The sizes you listed are not "too much", in fact that's a pretty common setup.
 

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Discussion Starter · #3 ·
I guess that depends what you mean by aggressive.

The sizes you listed are not "too much", in fact that's a pretty common setup.
Gotcha!
I was worried the 205/50 would be to big for the 5.5J x 15 wheels.
 

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What size tire will fit a 5.5 rim?


Equivalency table
Rim widthMinimum tire widthIdeal tire width
5,5 Inches165 mm175 or 185 mm
6,0 Inches175 mm185 or 195 mm
6,5 Inches185 mm195 or 205 mm
7,0 Inches195 mm205 or 215 mm
 

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Discussion Starter · #5 ·
What size tire will fit a 5.5 rim?


Equivalency table
Rim widthMinimum tire widthIdeal tire width
5,5 Inches165 mm175 or 185 mm
6,0 Inches175 mm185 or 195 mm
6,5 Inches185 mm195 or 205 mm
7,0 Inches195 mm205 or 215 mm

So, you think I should go with

185/55/15 for the front?
 

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To make matters more confusing I have read, put the widest tire you can on a wheel OR then use the widest rim possible (meaning a narrowish tire) for the most grip. Personally I follow what phattires has listed. The MR2 spyder came with a 185/55R15 on a 5.5 inch wheel from the factory. Early spyders use a 205/50R15 on a 6.5 wheel, later models use a 215/45R16 on a 7x16 wheel. Tire diameter is in the 23" or so range.
 

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The OE front wheels were 6" with a 185 tire.

I think that 205 is probably too wide for a 5.5" wheel. I would expect that the best grip would be achieved with a tire that is matched to the wheel. The general trend seems to be that grip declines with tire distortion, and that will happen with a tire that is too wide or too narrow in the extreme.
 

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Discussion Starter · #9 ·
Ok, after reading on you guys input so far.
How about this:


Option #1
Lotus Elise Style setup since the front on the Elise is also 5.5 inch wide.
5.5Jx16 ET10. 195/50ZR16 (Elise Front)
7.5Jx17 ET13. 225/45ZR17 (Elise Rear)

So for my wheels, I was thinking of going this route on the tire size.
My MR2 Spyder wheel size:
Front: 5.5Jx15+40. 195/50/15
Rear: 7.0Jx15+37. 225/45/15
Tire Wheel Automotive tire Tread Hubcap

(Only good tire option for this size) Toyo Proxes R1R





Option #2
Factory style sizes
This setup is more OEM size, and the plus....more tire option, unlike the first option.
Front: 5.5Jx15+40. 185/55/15
Rear: 7.0Jx15+37 205/50/15
Tire Wheel Automotive tire Tread Locking hubs

My tire of choice for this option (ADVAN Fleva V701 Yokohama's Ultra High Performance Summer tire)
 

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Option 1 looks to be the winner , 225 on 7" rim is pushing it but a lot of people do it . R1R is a good tire .
 

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😂😂😂😂
It’s hard to believe why the Elise came with a 5.5 inch wide wheels and it definitely wasn’t a drag car.
True...BUT, the Spyder ISN'T an Elise!
Still, good luck with your search and setup!
 

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Discussion Starter · #17 ·
True...BUT, the Spyder ISN'T an Elise!
Still, good luck with your search and setup!
Thanks,
No, not an Elise, however they do share many similarities when it comes to handling dynamics. Again, this is just my opinion.
 
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