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I'm considering going from 19 35 profile tyres to 18 35, to get lower gearing for my local mountain roads.
Have any of you tried this, if so, was it notable?
I autox my 06 Cayman S and found that the car is quicker to accelerate, easier to turn with 18's than the 19's I had on there. Also saved about 4 lbs per wheel in overall weight.
Yes, that would result in an effectively lower final drive, whether you'd feel it or not is a different matter that only you can answer. I would note the the weight of the wheel/tire combo would likely be a bigger contributer to any performance difference.
move to 18's, only downside is possibly fewer tyre choices as we move into the future
Im looking at semi slicks, many to choose, probably go for latest Namkang.
The 19 set with their Pilot Sport is a keeper, having possibility chancing when ever I like.
What I understand is no one of you have tried 18 your 987.
Im looking at semi slicks, many to choose, probably go for latest Namkang.
The 19 set with their Pilot Sport is a keeper, having possibility chancing when ever I like.
What I understand is no one of you have tried 18 your 987.
Plenty of people use 18s but with the correct size tires.
You might want to ping the racing & drivers ed forum on this. Common use case for racers is optimizing tire circumference to improve final drive ratio.
Yes, that would result in an effectively lower final drive, whether you'd feel it or not is a different matter that only you can answer. I would note the the weight of the wheel/tire combo would likely be a bigger contributer to any performance difference.
Cheers,
Julian
^This. Also, I don't think going with ~1" smaller diameter tire is going to make much difference in terms of performance. It may feel slightly more lively in 1st and 2nd, but usually it takes around a 10-15% change in gearing to see measurable improvements assuming the car is woefully under-geared. The shorter tires will certainly make the wheel wells appear much larger and look a bit goofy.
01-22-2024, 06:44 PM
Swap from 19 alloys to 18?
