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Fitted 235/35/19 & 275/30/20 Michelin Pilot Sport 4S - Page 3 - Ride/Handling/Suspension/Brakes/Wheels/Tyres - The Lotus Forums Jump to content
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Fitted 235/35/19 & 275/30/20 Michelin Pilot Sport 4S

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This is a dumb question I expect but I'm asking it anyway!  How is it possible to fit wider profile tyres on the same alloy wheel?  i.e above you're saying you're changing to 285 from 275?

 

 

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1 minute ago, Techyd said:

This is a dumb question I expect but I'm asking it anyway!  How is it possible to fit wider profile tyres on the same alloy wheel?  i.e above you're saying you're changing to 285 from 275?

 

 

There are size guides online that will give you a range of tyre fitting sizes for each wheel width. The only thing to check then is whether there is enough clearance either side of the wheel for the wider tyre before it hits on any projections.

 

 

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55 minutes ago, Techyd said:

This is a dumb question I expect but I'm asking it anyway!  How is it possible to fit wider profile tyres on the same alloy wheel?  i.e above you're saying you're changing to 285 from 275?

 

 

Lotus do it on the same size wheels

265 or 285 on the rear  of the Exige, both use a 10'' wide rear wheel

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You should be able to find charts stating the range of tyre widths suitable for a given rim width.  

It annoys me that the tyre width is usually in metric and the rim widths are usually in imperial !!! 🤨😤

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Finally got my PS4S's fitted and am most impressed so far. Noticeably quieter and the ride feels softer too. I also haven't encountered the 'skipping' that would occur with the Pirellis when manoeuvring on full lock at low speeds.

I have no intent of using them on track but for road use they certainly get my vote :thumbup:

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You know come to think of it the skipping is much less for me too!

Its definitely a quieter ride,  and wet grip today was very good!!

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Thats the one the best things about modern high performance tyres, they give up so little in everyday use they really are brilliant!  Sure the Cup2 will get you round a track 1 sec faster but in comparison its wet and cold condition performance is much worse.

Just wish Michelin sold the PS4S in 18 in the UK.  Come Michelin sort it out!! 

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Excellent point about the full lock skipping, I had completely forgotten about that. It was really bad with the Pirellis but I've not noticed it at all either, since the change to MPS4Ss.

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I'm going to revise my earlier comment about the Michelin PS4 coping totally fine with track driving.  I was at Bedford Autodrome again this weekend and I found after a few laps the tyres going off and not providing as much grip or stability as previous laps like there was extra play in tread blocks so you lost a touch of steering feedback too.  I guess they were getting too hot, as at the start of each session grip was good again and then would fall off after ~5laps (~15 mins).

I don't know if it was just the hotter temperatures we had over the weekend ~22degC compared to my previous track day which was around ~10degC or just the extra knowledge and skills gained since my last time out so I was able to push the car harder and work the tyres more or maybe a bit of both but I found the tyres didn't give the same consistent grip they did lap after lap after lap as they did on my previous track day at Bedford.  Performance didn't drop off a cliff it was small incremental steps once they got hot and still very usable for the occasional track day and you'll still have loads of fun but you're got going to be setting long stint lap records but then you wouldn't be using PS4 if that was your aim anyways.

My rears are almost worn out now so I'm going to replace with the Super Sports, I have the 18/19 wheel combo so the PS4S are not available in my size.   After talking to the helpful people at Michelin customer services they think the Super Sport should cope better with track driving than the PS4, the SS is designed around 80% road and 20% track driving. I will do the fronts too when they eventually wear out too.

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That's seems consistent with the tyres position in the range - on the track the compound and tread block design doesn't hold to to prolonged track usage.

Bedford autodrome is a great circuit by the way!  Quite a long lap so enough space for cars to spreadout.

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Hi Russ, the link you posted takes me to a list of vendors selling the correct size for the rear 19 wheel.  That has always been available in the UK.  Its the front tyre 225/40/r18 that is not available in the UK.

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Oh, sorry. I was only replacing the rears, myself.

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I recently change my original fit P-Zero’s for the 400 Michelins. Despite some on here saying they only got 2,000 miles out of a set, mine did 30,000kms. Probably because the roads in Italy have a pretty low grip surface.  I find the Michelins to be a rather better tyre, giving much sharper responsiveness as others have said. I’m also glad to have moved up to the wider size as they fit the rims better than the Pirelli's and have the small curbing protection strip. 

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@Breeze I guess your car has been equipped with the P zero Corsa tyre?

(well, actually the corsas - from a look at the pireli homepage in Germany - could be ordere in LS specification "again", bit if that changes I have to think abut changing to Michelin next change also)

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