Tyre sizes

siweb · 18-05-2008, 20:38

I've now been waiting around 11 weeks for mi new tyres to come and yet still no date :roll: (235/75/15 stock size I believe)
but was offered 30/9.5/15 which are around an inch taller maybe more with tread depth...

The thing is as I tow a very heavy trailer/load will the bigger tyres make a lot of difference to the power and place unneeded strain on the transmission :?: as the final drive ratio will be different...

the tyres are kl71's :wink: as I didn't want silly tyres like I've got on the Isuzu's

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18-05-2008, 20:38	#1
siweb Senior Member Join Date: Mar 2008 Location: Yorkshire Posts: 191	Tyre sizes I've now been waiting around 11 weeks for mi new tyres to come and yet still no date :roll: (235/75/15 stock size I believe) but was offered 30/9.5/15 which are around an inch taller maybe more with tread depth... The thing is as I tow a very heavy trailer/load will the bigger tyres make a lot of difference to the power and place unneeded strain on the transmission :?: as the final drive ratio will be different... the tyres are kl71's :wink: as I didn't want silly tyres like I've got on the Isuzu's :