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Tyre question

StuK

PCGB Member
Member
Hi all

I want to put some new tyres on my lux and had decided that I wanted the Toyo T1-Rs. I've got 15" teledials and the existing p6000s are 215/60. It looks like I can only get the Toyos with a lower profile (215/45). Would these still do the job, or would I need to look for some different tyres?

If I can't put the Toyos on can anybody recommend something else suitable?

Sorry for my ignorance!

Stu
 
I used 195/65s instead, i'd go with other tyres rather than have ones with such a shorter sidewall.

215/60=129mm sidewall
195/65=127mm sidewall
215/45=96mm sidewall

215/45 wont fill the arches, car will look like a roller skate [:D]
 
Also the gearing will be significantly reduced if you use 215/45

Current Porsche approved fitments are:
195/65 R15 91W - Pirelli P 6000 N1, or Dunlop SP Sport FastResponse N0
or 215/60 R15 94W Pirelli P 6000 N1
 
Am I correct in thinking that 215 is the rim width? If so, how can I get away with putting 195 width tyres on, surely they'd be narrower than the wheels? What impact would this have on tyre performance and wear?

If I go for the 215/60, then the choices look pretty limited and I want something different from the slippery P6000s.

Are there any yokohamas or avons that anyone can recommend with those dimensions?
 
215 is the tyre width in mm, not the rim width, your rims are 7" wide.
the number after the / is the height of the side wall as a percentage of the width, so a 195/70 has a similar overall diameter as a 215/60 and these sizes are the smallest / largest that would normally fit on the 7" rims.
 
http://www.carbibles.com/tyre_bible.html - handy site for tyre info, particularly the bottom of page 4 for this situation - a comparative size calculator - http://www.carbibles.com/tyre_bible_pg4.html
 
Falken 912s are available, although 452s arent, unfortunately. If you go down to 205/60/15 (which is acceptable particularly when you consider that some 205s will be wider than other 215s and that the 215s may be lower profile), then you get a greater choice with Pirelli, Goodyear, Michelin. Toyo and Falken all offering decent tyres in this size.

Try looking at Camskills site...


Simon
 
Thanks for all your advice, I feel well educated on tyres now. I even did some calculations as to the impact of different sized tyres on my speedo readings and odometer.

In the end I've settled on the Dunlop sp sport fast response 195/65. They seemed to have good reviews and look like they'll definitely be grippier than the P6000s.
 
If you've not already done so here's a link to a price comparison site for tyres to save on time searching numerous internet companies . http://www.tyrepriceadvisor.co.uk/en/search/DUNLOP/-/195/65/15/fitted/-/-/-/- . It doesn't cover all suppliers (tyre traders for example are not on there ) but its a quick way to get a lowest quote to work from . What i generally do is find out who the local tyre fitter is for the cheapest on line supplier then phone the garage directly and see if they can beat the price . That way you might be able to shave a couple of extra quid of the price plus you've only got one company to deal with if any problems arise .
 
Thanks Stevie, I had a quick look, but have already ordered the tyres anyway. I'm having the wheels refurbished next week, so ordered the tyres from camskills to be delivered directly to the wheel refurbisher. I got the tyres for £50 each, which I thought was pretty reasonable.
 
£50 is a good price and makes more sense having them delivered to the wheel refurbisher . i've been looking at tyres for my d90's and was also considering the dunlops as like you have said they get good reviews but i think i've settled on kumho ku31's as they are still a decent tyre and considerably cheaper in my sizes . i was going ask about the condition of your alloys as i've got a set of 15" teledials that have recently been resprayed with 4 almost new goodyear eagle nct5 195/65/15 tyres which i'm looking to sell for £225 . would potentially save someone hundreds compared to the cost of a refurb and new boots all round . Plus they could sell their old alloys for £100- £150 for a tatty set meaning a net upgrade cost of around £100 .
 
I was tempted by the good reviews onto Dunlop SP Sport Fast Responses for my Golf daily driver (in 205/55 R16 V size). To be honest I can't wait for them to wear out so I can put another set of Bridgestone Turanza ER300s on. I find the side wall flex on the Dunlops most disturbing compared to the Bridgestones I've habitually used. I'm also not impressed by the levels of grip.
 
I find the side wall flex on the Dunlops most disturbing compared to the Bridgestones I've habitually used
I found a similar problem when i changed the bridgestones for toyo px 4s on the mx5 i owned last year . the back end became particularly wallowy and totally knackered the go kart style handling . do bridgestone generally have stiffer side walls compared to the average tyre ?
 

ORIGINAL: stevie d

I was going ask about the condition of your alloys as i've got a set of 15" teledials that have recently been resprayed with 4 almost new goodyear eagle nct5 195/65/15 tyres which i'm looking to sell for £225 . would potentially save someone hundreds compared to the cost of a refurb and new boots all round . Plus they could sell their old alloys for £100- £150 for a tatty set meaning a net upgrade cost of around £100 .

If only I'd known that a few hours ago I could've saved myself about £400! Nevermind, I'm sure I'll be pleased with the refurbed wheels and new dunlops, as long as it's not too wallowy around the corners now!
 

ORIGINAL: StuK

Thanks for all your advice, I feel well educated on tyres now. I even did some calculations as to the impact of different sized tyres on my speedo readings and odometer.

In the end I've settled on the Dunlop sp sport fast response 195/65. They seemed to have good reviews and look like they'll definitely be grippier than the P6000s.


Changing the aspect ratio changes the rolling circumference

Try variations here http://www.miata.net/garage/tirecalc.html
 



Changing the aspect ratio changes the rolling circumference

Try variations here http://www.miata.net/garage/tirecalc.html
[/quote]

Already done the calcs myself, rolling circumference is only 0.7% shorter on new tyres, so shouldn't have an impact.
 
Camskill are hard to beat on price and service, just ordered some Apex springs for my Passatt and cheaper than anywhere else in the UK, corteuos treatment and just up the road from me so no p & p double whammy.
Got my Toyo T1r.s from them for the 220 Turbo also, again no one could touch them price wise.
 

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