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Tyres

Oct

Oct

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I am probably duplicating questions here but I can't get any results from the search so I apologise if it has been covered before.I currently have 215/60/15 on all four corners but the available tyres at this size is limited. What are the implications (if any) to running a different profile say 215/45/15 ?


 
If you use a calculator like this one: http://www.club80-90syncro.co.uk/Syncro_website/TechnicalPages/TRC%20calculator.htm You get some idea of what will happen - the car's gearing will be affected by a fair amount (the speedo will read incorrectly too), plus the ride will be harder, like as not. The car will be lower to the ground, so there will be a fair change in its dynamics overall (I'd imagine it would be a bit undergeared?). Also, you would DEFINITELY want to tell your insurers / clear it with them first, if such a size isn't the OEM spec; they will use any material fact to get out of a claim that they can!
 
Blackcircles list a load of options in your size. Khumos, Falkens, Toyos and Continentals have all been recommended here.
 
on 7j rims you can use 195/65/15 as an alternative, its listed in the manual. lower profile will affect ride, speedo readings and make your car look like a roller skate. [:D] if you really want a lower profile you need bigger rims. 944 designed to use up to 16", lots put 17" or even 18" on but expect problems with loose fillings/spinal injuries.
 
I run Khumo KH15 215/60x15
IMGP3447.jpg
Using the lower aspect ratio tyres will alter gearing (better acceleration, lower top end but worse fuel consumption and higher revs/noiser at cruising speeds) and dynamics as has been said but also they wont fill the wheelarchs properly. Mine had 215/55x15 when I got it, fronts looked almost ok, rears lost!
IMAGE_167.jpg
Wouldn't want to see 215/45x15 on a 944
 
Good info guys thank you.I will stick with the standard or buy bigger wheels [;)]
 
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