Tyre load rating

Bullnose75 · 24th July 2020, 17:18

Need a set of 225/45R17 tyres for the Tourer. Last set had 91Y load rating.
Was thinking of getting next set with 94Y load rating as I carry quite a bit of weight in the Tourer now and then but wondered how much harder the ride would be with the higher load rating tyres fitted as I guess they have slightly harder sidewalls ?
What load rating tyres do you other Tourer guys fit ?

Devilish · 24th July 2020, 18:05

Unless you have the mother in law as a passenger, 91Y will be fine.

Correct, the sidewalls are stronger, it will handle better, and the ride may be a little stiffer, but I doubt if it will be that noticeable in the tourer.

Manufacturers can flaunt load indexes, you can buy a 91 that is as strong as a 94, you can buy a 94 that is as strong as a 91.

Unless you overload, that = driving with no insurance, 91Y will be fine.

Unless you want to elaborate on "Quite a bit of weight"

SWMBO drives mine, and I only have 91Y's

FYI, I will deny any of the above.

rovertone · 24th July 2020, 18:36

I found a slight improvement when I went from 94 to 91 on my saloon but I would still like to improve a bit more so next tyre change i am opting for 215/50/17 which Rover changed to on the Mk2s.
Gives 10mm less footprint width an extra 6.25mm wall height. Rover must have changed for a reason, they are a bit more expensive so |I would like to think it was for comfort rather than cost.
Worth a try me thinks.

Bullnose75 · 24th July 2020, 19:32

Quote:

Originally Posted by Devilish

Unless you have the mother in law as a passenger, 91Y will be fine.

Correct, the sidewalls are stronger, it will handle better, and the ride may be a little stiffer, but I doubt if it will be that noticeable in the tourer.

Manufacturers can flaunt load indexes, you can buy a 91 that is as strong as a 94, you can buy a 94 that is as strong as a 91.

Unless you overload, that = driving with no insurance, 91Y will be fine.

Unless you want to elaborate on "Quite a bit of weight"

SWMBO drives mine, and I only have 91Y's

FYI, I will deny any of the above.

Re Quite a bit of weight - building materials now and then. Bags of sand and cement,concrete gravel boards,timber etc but not very often and even then only for a short distance.
I think the ride is hard enough with the 91Y,s on it at mo and the handling is fine so think i'll prob stay with the slightly cheaper 91Y's

Bullnose75 · 24th July 2020, 19:39

Quote:

Originally Posted by rovertone

I found a slight improvement when I went from 94 to 91 on my saloon but I would still like to improve a bit more so next tyre change i am opting for 215/50/17 which Rover changed to on the Mk2s.
Gives 10mm less footprint width an extra 6.25mm wall height. Rover must have changed for a reason, they are a bit more expensive so |I would like to think it was for comfort rather than cost.
Worth a try me thinks.

Yeah,i'd thought about those 215/50's but do you think just over 3mm increase in height between road surface contact patch of tyre and wheel rim would make a noticeable difference in comfort ?
Suppose it might do or MG Rover wouldn't have changed them.
Think i'll stay with the 91Y 225/45R17's

rovertone · 24th July 2020, 21:41

I think its just over 6mm in the wall, time will tell I'll post up a comparison as and when.
As well as trying to soften the ride I am also trying to reduce inside road noise. I have been running G/Year Efficientgrip which are rated fairly quiet from a drive by perspective but are noisier than I would like. I will also go for a more premium tyre.
Got a few mm to go with current tyres, at this years mileage going rate I'm going to have a bit of a wait to find out!

macafee2 · 24th July 2020, 22:14

Quote:

Originally Posted by Bullnose75

Re Quite a bit of weight - building materials now and then. Bags of sand and cement,concrete gravel boards,timber etc but not very often and even then only for a short distance.
I think the ride is hard enough with the 91Y,s on it at mo and the handling is fine so think i'll prob stay with the slightly cheaper 91Y's

quantity, one or two of any of those wont be a problem. The roof will take something link 100kg. I think I'd worry more about my upper arms and springs then tyres.

macafee2

victorgte · 25th July 2020, 10:40

Quote:

Originally Posted by Bullnose75

Yeah,i'd thought about those 215/50's but do you think just over 3mm increase in height between road surface contact patch of tyre and wheel rim would make a noticeable difference in comfort ?
Suppose it might do or MG Rover wouldn't have changed them.
Think i'll stay with the 91Y 225/45R17's

225/50/17 made a noticeable difference to my V6 180 Contemporary 75. Smoother and quieter. They now live on another members car and he likes them too. 45’s were firmer and made a bang over bumps and pot holes.
Handling was fine too. I was lucky to get a deal on all 4 tyres fitted in the sale.
Oddly enough I got 4 in a sale with Halfords Auto centre too for my other 75. Most recent good deal was with Formula One Auto Centre.

Bullnose75 · 5th August 2020, 10:06

Decided to stay with the 225 45 17's in the end 91Y load rating like before. Not using the Tourer quite as much as I was so couldn't really warrant paying the extra money for the 215 50's.
Anyway,had a set of Uniroyal Rainsport 5's fitted early this morning same size and load rating as the Avons they replaced.
Have already noticed an improvement compared to the Avons !
The Rainsports appear to give a softer ride,less jarring felt inside car over uneven surfaces,and tyre/road noise seems a lot less too. Am running them at same pressure as the Avons were.
Now waiting for some heavy rain to see how they perform on really wet roads.

COLVERT · 5th August 2020, 10:55

Quote:

Originally Posted by Bullnose75

Decided to stay with the 225 45 17's in the end 91Y load rating like before. Not using the Tourer quite as much as I was so couldn't really warrant paying the extra money for the 215 50's.
Anyway,had a set of Uniroyal Rainsport 5's fitted early this morning same size and load rating as the Avons they replaced.
Have already noticed an improvement compared to the Avons !
The Rainsports appear to give a softer ride,less jarring felt inside car over uneven surfaces,and tyre/road noise seems a lot less too. Am running them at same pressure as the Avons were.
Now waiting for some heavy rain to see how they perform on really wet roads.

The noisy tyres seem to be the ones with the harder rubber. They tend to last longer but have less grip in the wet.

Your new tyres are a better choice than your previous make.--

24th July 2020, 17:18	#1
Bullnose75 Avid contributor Rover 75 Tourer 2.0 V6 LPG Join Date: Apr 2018 Location: Colchester Posts: 210 Thanks: 4 Thanked 50 Times in 39 Posts	Tyre load rating Need a set of 225/45R17 tyres for the Tourer. Last set had 91Y load rating. Was thinking of getting next set with 94Y load rating as I carry quite a bit of weight in the Tourer now and then but wondered how much harder the ride would be with the higher load rating tyres fitted as I guess they have slightly harder sidewalls ? What load rating tyres do you other Tourer guys fit ?

24th July 2020, 18:05	#2
Devilish Been round the block 75 Tourer Join Date: Apr 2009 Location: Cannock Posts: 4,125 Thanks: 3 Thanked 189 Times in 121 Posts	Unless you have the mother in law as a passenger, 91Y will be fine. Correct, the sidewalls are stronger, it will handle better, and the ride may be a little stiffer, but I doubt if it will be that noticeable in the tourer. Manufacturers can flaunt load indexes, you can buy a 91 that is as strong as a 94, you can buy a 94 that is as strong as a 91. Unless you overload, that = driving with no insurance, 91Y will be fine. Unless you want to elaborate on "Quite a bit of weight" SWMBO drives mine, and I only have 91Y's FYI, I will deny any of the above. __________________ If at first you don't succeed, hide the evidence Last edited by Devilish; 24th July 2020 at 18:08..

24th July 2020, 18:36	#3
rovertone Gets stuck in Rover 75 Conne SE Auto CDTi Join Date: Nov 2012 Location: Redditch Posts: 667 Thanks: 185 Thanked 135 Times in 109 Posts	I found a slight improvement when I went from 94 to 91 on my saloon but I would still like to improve a bit more so next tyre change i am opting for 215/50/17 which Rover changed to on the Mk2s. Gives 10mm less footprint width an extra 6.25mm wall height. Rover must have changed for a reason, they are a bit more expensive so \|I would like to think it was for comfort rather than cost. Worth a try me thinks. __________________ 2003 Mk 1 Connie SE CDTi Auto Monogram Mirage 2/Sandstone Leather 511th CDTi out of 4744 produced 9th in Mirage 2 out of 17 produced Also 2004 Rover 25 SXi CVT, 1999 Megane Cabriolet and still missing my 800 Fastback.

24th July 2020, 21:41	#6
rovertone Gets stuck in Rover 75 Conne SE Auto CDTi Join Date: Nov 2012 Location: Redditch Posts: 667 Thanks: 185 Thanked 135 Times in 109 Posts	I think its just over 6mm in the wall, time will tell I'll post up a comparison as and when. As well as trying to soften the ride I am also trying to reduce inside road noise. I have been running G/Year Efficientgrip which are rated fairly quiet from a drive by perspective but are noisier than I would like. I will also go for a more premium tyre. Got a few mm to go with current tyres, at this years mileage going rate I'm going to have a bit of a wait to find out! __________________ 2003 Mk 1 Connie SE CDTi Auto Monogram Mirage 2/Sandstone Leather 511th CDTi out of 4744 produced 9th in Mirage 2 out of 17 produced Also 2004 Rover 25 SXi CVT, 1999 Megane Cabriolet and still missing my 800 Fastback.

5th August 2020, 10:06	#9
Bullnose75 Avid contributor Rover 75 Tourer 2.0 V6 LPG Join Date: Apr 2018 Location: Colchester Posts: 210 Thanks: 4 Thanked 50 Times in 39 Posts	Decided to stay with the 225 45 17's in the end 91Y load rating like before. Not using the Tourer quite as much as I was so couldn't really warrant paying the extra money for the 215 50's. Anyway,had a set of Uniroyal Rainsport 5's fitted early this morning same size and load rating as the Avons they replaced. Have already noticed an improvement compared to the Avons ! The Rainsports appear to give a softer ride,less jarring felt inside car over uneven surfaces,and tyre/road noise seems a lot less too. Am running them at same pressure as the Avons were. Now waiting for some heavy rain to see how they perform on really wet roads.